up 7.24.3

Fix TUN core elevation: decide sudo from the config context snapshot (#9830 )
CoreManager.RunProcess decided sudo elevation from the live mutable _config.TunModeItem.EnableTun while the launched config was generated from the immutable CoreConfigContext snapshot. If the TUN state changed while a reload was in flight, a core whose config contains a TUN inbound could launch without elevation and die within the 100ms health check ("Failed to run core"), with no stderr shown. The elevation decision now follows context.IsTunEnabled / preContext.IsTunEnabled, so the generated config and the launch mode always agree. With legacy TUN protect, the sing-box pre-core hosting TUN is elevated and the main core no longer runs as root needlessly.
2026-07-26 18:02:05 +03:00 · 2026-07-26 21:25:31 +08:00 · 2026-07-26 21:24:11 +08:00 · 2026-07-26 21:07:36 +08:00 · 2026-07-26 20:46:32 +08:00 · 2026-07-26 20:46:01 +08:00
70 changed files with 3343 additions and 3986 deletions
--- a/.github/scripts/UpdateCert.cs
+++ b/.github/scripts/UpdateCert.cs
@@ -1,3 +1,49 @@
+/*
+==============================================================================
+THIRD-PARTY CA CERTIFICATE DATA ATTRIBUTION
+==============================================================================
+
+This component includes CA certificate data obtained from third-party sources.
+
+1. Common CA Database (CCADB)
+------------------------------------------------------------------------------
+Website:
+https://www.ccadb.org/
+
+Data source:
+https://ccadb.my.salesforce-sites.com/mozilla/IncludedRootsPEMTxt?TrustBitsInclude=Websites
+
+License:
+Community Data License Agreement – Permissive, Version 2.0 (CDLA-2.0 Permissive)
+
+The names and trademarks of CCADB contributors may not be used to endorse or
+promote products derived from this data without prior written permission.
+
+License text:
+https://cdla.dev/permissive-2-0/
+
+
+2. Chromium Root Store
+------------------------------------------------------------------------------
+Source:
+Chromium Project
+
+Data source:
+https://chromium.googlesource.com/chromium/src/+/main/net/data/ssl/chrome_root_store/root_store.certs?format=TEXT
+
+License:
+BSD 3-Clause License
+
+Copyright:
+Copyright (c) The Chromium Authors
+
+The Chromium Root Store data is distributed under the BSD 3-Clause License.
+
+License text:
+https://opensource.org/licenses/BSD-3-Clause
+==============================================================================
+*/
+
 using System;
 using System.Net.Http;
 using System.Text;
@@ -27,68 +73,23 @@ Console.WriteLine("\nAll done!");

 async Task ProcessMozillaAsync(string outputDir)
 {
-    const string certdataUrl = "https://raw.githubusercontent.com/mozilla-firefox/firefox/refs/heads/release/security/nss/lib/ckfw/builtins/certdata.txt";
+    const string certdataUrl = "https://ccadb.my.salesforce-sites.com/mozilla/IncludedRootsPEMTxt?TrustBitsInclude=Websites";
    var outputFile = Path.Combine(outputDir, "mozilla_roots_pem");

    Console.WriteLine("Downloading Mozilla certdata.txt...");
    var content = await client.GetStringAsync(certdataUrl);

-    Console.WriteLine("Parsing MULTILINE_OCTAL to PEM...");
-    var pems = ParseMozillaCertData(content);
+    var pemMatches = Regex.Matches(content, @"(-----BEGIN CERTIFICATE-----[\s\S]*?-----END CERTIFICATE-----)");
+    var pems = new List<string>();
+    foreach (Match m in pemMatches)
+    {
+        pems.Add(m.Groups[1].Value.Trim());
+    }

    await File.WriteAllTextAsync(outputFile, string.Join("\n\n", pems));
    Console.WriteLine($"Mozilla roots saved to: {outputFile} ({pems.Count} certificates)");
 }

-List<string> ParseMozillaCertData(string text)
-{
-    var pems = new List<string>();
-
-    var matches = Regex.Matches(text, 
-        @"CKA_VALUE MULTILINE_OCTAL\s*([\s\S]*?)\s*END", 
-        RegexOptions.Multiline);
-
-    foreach (Match m in matches)
-    {
-        var octalBlock = m.Groups[1].Value.Trim();
-        var der = OctalToBytes(octalBlock);
-        if (der.Length > 0)
-        {
-            var pem = ConvertToPem(der);
-            pems.Add(pem);
-        }
-    }
-    return pems;
-}
-
-byte[] OctalToBytes(string octalBlock)
-{
-    var bytes = new List<byte>();
-    var matches = Regex.Matches(octalBlock, @"\\(\d{1,3})");
-    foreach (Match m in matches)
-    {
-        bytes.Add((byte)Convert.ToInt32(m.Groups[1].Value, 8));
-    }
-    return bytes.ToArray();
-}
-
-string ConvertToPem(byte[] der)
-{
-    var base64 = Convert.ToBase64String(der);
-    var sb = new StringBuilder();
-    sb.Append("-----BEGIN CERTIFICATE-----\n");
-    
-    for (int i = 0; i < base64.Length; i += 64)
-    {
-        var length = Math.Min(64, base64.Length - i);
-        sb.Append(base64.Substring(i, length));
-        sb.Append("\n");
-    }
-    
-    sb.Append("-----END CERTIFICATE-----\n");
-    return sb.ToString().TrimEnd();
-}
-
 async Task ProcessChromeAsync(string outputDir)
 {
    const string chromeCertsUrl = "https://chromium.googlesource.com/chromium/src/+/main/net/data/ssl/chrome_root_store/root_store.certs?format=TEXT";
@@ -99,7 +100,7 @@ async Task ProcessChromeAsync(string outputDir)
    var decoded = Convert.FromBase64String(base64Content.Replace("\n", ""));

    var text = Encoding.UTF8.GetString(decoded);
-    
+
    var pemMatches = Regex.Matches(text, @"(-----BEGIN CERTIFICATE-----[\s\S]*?-----END CERTIFICATE-----)");
    var pems = new List<string>();
    foreach (Match m in pemMatches)
--- a/.github/workflows/build-windows-x86.yml
+++ b/.github/workflows/build-windows-x86.yml
@@ -52,7 +52,7 @@ jobs:
          dotnet --list-sdks 2>$null; $LASTEXITCODE=0

      - name: Setup .NET 10.0.1xx
-        uses: actions/setup-dotnet@v5.4.0
+        uses: actions/setup-dotnet@v6.0.0
        with:
          dotnet-version: 10.0.1xx

--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -69,7 +69,7 @@ jobs:
        dotnet --list-sdks 2>$null; $LASTEXITCODE=0

    - name: Setup .NET
-      uses: actions/setup-dotnet@v5.4.0
+      uses: actions/setup-dotnet@v6.0.0
      with:
        dotnet-version: '10.0.1xx'

--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,7 +20,7 @@ jobs:
        fetch-depth: '0'

    - name: Setup .NET
-      uses: actions/setup-dotnet@v5.4.0
+      uses: actions/setup-dotnet@v6.0.0
      with:
        dotnet-version: '8.0.x'

--- a/package-debian-loong.sh
+++ b/package-debian-loong.sh
@@ -13,8 +13,8 @@ PKGROOT="v2rayN-publish"
 PROJECT_HINT="v2rayN.Desktop/v2rayN.Desktop.csproj"
 OUTPUT_DIR="${HOME}/debbuild"
 DOTNET_TFM="net10.0"
-DOTNET_LOONGARCH_VERSION="10.0.109"
-DOTNET_LOONGARCH_TAG="v10.0.109-loongarch64"
+DOTNET_LOONGARCH_VERSION="10.0.110"
+DOTNET_LOONGARCH_TAG="v10.0.110-loongarch64"
 DOTNET_LOONGARCH_BASE="https://github.com/loongson/dotnet/releases/download"
 DOTNET_LOONGARCH_FILE="dotnet-sdk-${DOTNET_LOONGARCH_VERSION}-linux-loongarch64.tar.gz"
 DOTNET_SDK_URL="${DOTNET_LOONGARCH_BASE}/${DOTNET_LOONGARCH_TAG}/${DOTNET_LOONGARCH_FILE}"
@@ -597,8 +597,8 @@ package_binary() {
  write_desktop_file "$stage"
  write_maintainer_scripts "$debian_dir"

-  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.2.0), coreutils (>= 9.5), bash (>= 5.2.26), libfreetype6 (>= 2.13)"
-
+  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.1.3), coreutils (>= 9.4), bash (>= 5.2.21), libfreetype6 (>= 2.13)"
+  
  mkdir -p "$workdir/debian"
  cat > "$workdir/debian/control" <<EOF
 Source: v2rayn
--- a/package-debian-riscv.sh
+++ b/package-debian-riscv.sh
@@ -12,7 +12,7 @@ MIN_KERNEL="5.10"
 PKGROOT="v2rayN-publish"
 PROJECT_HINT="v2rayN.Desktop/v2rayN.Desktop.csproj"
 OUTPUT_DIR="${HOME}/debbuild"
-DOTNET_RISCV_VERSION="10.0.109"
+DOTNET_RISCV_VERSION="10.0.110"
 DOTNET_RISCV_BASE="https://github.com/xujiegb/dotnet-riscv/releases/download"
 DOTNET_RISCV_FILE="dotnet-sdk-${DOTNET_RISCV_VERSION}-linux-riscv64.tar.gz"
 DOTNET_SDK_URL="${DOTNET_RISCV_BASE}/${DOTNET_RISCV_VERSION}/${DOTNET_RISCV_FILE}"
@@ -595,8 +595,8 @@ package_binary() {
  write_desktop_file "$stage"
  write_maintainer_scripts "$debian_dir"

-  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.2.0), coreutils (>= 9.5), bash (>= 5.2.26), libfreetype6 (>= 2.13)"
-
+  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.1.3), coreutils (>= 9.4), bash (>= 5.2.21), libfreetype6 (>= 2.13)"
+  
  mkdir -p "$workdir/debian"
  cat > "$workdir/debian/control" <<EOF
 Source: v2rayn
--- a/package-debian.sh
+++ b/package-debian.sh
@@ -609,7 +609,7 @@ package_binary() {
  write_desktop_file "$stage"
  write_maintainer_scripts "$debian_dir"

-  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.2.0), coreutils (>= 9.5), bash (>= 5.2.26), libfreetype6 (>= 2.13)"
+  extra_depends="libc6 (>= 2.39), fontconfig (>= 2.15.0), desktop-file-utils (>= 0.26), xdg-utils (>= 1.1.3), coreutils (>= 9.4), bash (>= 5.2.21), libfreetype6 (>= 2.13)"

  mkdir -p "$workdir/debian"
  cat > "$workdir/debian/control" <<EOF
--- a/package-rhel-loong.sh
+++ b/package-rhel-loong.sh
@@ -12,8 +12,8 @@ MIN_KERNEL="6.12"
 PKGROOT="v2rayN-publish"
 PROJECT_HINT="v2rayN.Desktop/v2rayN.Desktop.csproj"
 RPM_TOPDIR="${HOME}/rpmbuild"
-DOTNET_LOONGARCH_VERSION="10.0.109"
-DOTNET_LOONGARCH_TAG="v10.0.109-loongarch64"
+DOTNET_LOONGARCH_VERSION="10.0.110"
+DOTNET_LOONGARCH_TAG="v10.0.110-loongarch64"
 DOTNET_LOONGARCH_BASE="https://github.com/loongson/dotnet/releases/download"
 DOTNET_LOONGARCH_FILE="dotnet-sdk-${DOTNET_LOONGARCH_VERSION}-linux-loongarch64.tar.gz"
 DOTNET_SDK_URL="${DOTNET_LOONGARCH_BASE}/${DOTNET_LOONGARCH_TAG}/${DOTNET_LOONGARCH_FILE}"
@@ -513,9 +513,9 @@ Requires:       cairo, pango, openssl, mesa-libEGL, mesa-libGL
 Requires:       glibc >= 2.39
 Requires:       fontconfig >= 2.15.0
 Requires:       desktop-file-utils >= 0.26
-Requires:       xdg-utils >= 1.2.0
-Requires:       coreutils >= 9.5
-Requires:       bash >= 5.2.26
+Requires:       xdg-utils >= 1.1.3
+Requires:       coreutils >= 9.4
+Requires:       bash >= 5.2.21
 Requires:       freetype >= 2.13

 %description
--- a/package-rhel-riscv.sh
+++ b/package-rhel-riscv.sh
@@ -12,7 +12,7 @@ MIN_KERNEL="5.10"
 PKGROOT="v2rayN-publish"
 PROJECT_HINT="v2rayN.Desktop/v2rayN.Desktop.csproj"
 RPM_TOPDIR="${HOME}/rpmbuild"
-DOTNET_RISCV_VERSION="10.0.109"
+DOTNET_RISCV_VERSION="10.0.110"
 DOTNET_RISCV_BASE="https://github.com/xujiegb/dotnet-riscv/releases/download"
 DOTNET_RISCV_FILE="dotnet-sdk-${DOTNET_RISCV_VERSION}-linux-riscv64.tar.gz"
 DOTNET_SDK_URL="${DOTNET_RISCV_BASE}/${DOTNET_RISCV_VERSION}/${DOTNET_RISCV_FILE}"
@@ -512,9 +512,9 @@ Requires:       cairo, pango, openssl, mesa-libEGL, mesa-libGL
 Requires:       glibc >= 2.39
 Requires:       fontconfig >= 2.15.0
 Requires:       desktop-file-utils >= 0.26
-Requires:       xdg-utils >= 1.2.0
-Requires:       coreutils >= 9.5
-Requires:       bash >= 5.2.26
+Requires:       xdg-utils >= 1.1.3
+Requires:       coreutils >= 9.4
+Requires:       bash >= 5.2.21
 Requires:       freetype >= 2.13

 %description
--- a/package-rhel.sh
+++ b/package-rhel.sh
@@ -501,9 +501,9 @@ Requires:       cairo, pango, openssl, mesa-libEGL, mesa-libGL
 Requires:       glibc >= 2.39
 Requires:       fontconfig >= 2.15.0
 Requires:       desktop-file-utils >= 0.26
-Requires:       xdg-utils >= 1.2.0
-Requires:       coreutils >= 9.5
-Requires:       bash >= 5.2.26
+Requires:       xdg-utils >= 1.1.3
+Requires:       coreutils >= 9.4
+Requires:       bash >= 5.2.21
 Requires:       freetype >= 2.13

 %description
--- a/v2rayN/Directory.Build.props
+++ b/v2rayN/Directory.Build.props
@@ -1,7 +1,7 @@
 <Project>

    <PropertyGroup>
-        <Version>7.24.0</Version>
+        <Version>7.24.3</Version>
    </PropertyGroup>

    <PropertyGroup>
--- a/v2rayN/Directory.Packages.props
+++ b/v2rayN/Directory.Packages.props
@@ -9,13 +9,13 @@
    <PackageVersion Include="Avalonia.Controls.DataGrid" Version="12.1.0" />
    <PackageVersion Include="Avalonia.Desktop" Version="12.1.0" />
    <PackageVersion Include="AvaloniaUI.DiagnosticsSupport" Version="2.2.3" />
-    <PackageVersion Include="AwesomeAssertions" Version="9.4.0" />
-    <PackageVersion Include="DialogHost.Avalonia" Version="0.12.2" />
+    <PackageVersion Include="AwesomeAssertions" Version="9.5.0" />
+    <PackageVersion Include="DialogHost.Avalonia" Version="0.12.3" />
    <PackageVersion Include="IPNetwork2" Version="4.3.0" />
    <PackageVersion Include="ReactiveUI.Avalonia" Version="12.0.3" />
    <PackageVersion Include="CliWrap" Version="3.10.2" />
-    <PackageVersion Include="Downloader" Version="5.9.4" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
+    <PackageVersion Include="Downloader" Version="5.9.5" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
    <PackageVersion Include="H.NotifyIcon.Wpf" Version="2.4.1" />
    <PackageVersion Include="MaterialDesignThemes" Version="5.3.2" />
    <PackageVersion Include="QRCoder" Version="1.8.0" />
@@ -27,7 +27,7 @@
    <PackageVersion Include="Semi.Avalonia.DataGrid" Version="12.1.0" />
    <PackageVersion Include="NLog" Version="6.1.4" />
    <PackageVersion Include="sqlite-net-e" Version="1.11.285" />
-    <PackageVersion Include="Repobot.SQLite.Unofficial" Version="3.53.3" />
+    <PackageVersion Include="Repobot.SQLite.Unofficial" Version="3.53.3.10" />
    <PackageVersion Include="TaskScheduler" Version="2.12.2" />
    <PackageVersion Include="WebDav.Client" Version="2.9.0" />
    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
@@ -36,4 +36,4 @@
    <PackageVersion Include="ZXing.Net.Bindings.SkiaSharp" Version="0.16.22" />
    <PackageVersion Include="SkiaSharp.NativeAssets.Linux" Version="3.119.4" />
  </ItemGroup>
-</Project>
+</Project>
--- a/v2rayN/ServiceLib.Tests/CoreConfig/CoreConfigTestFactory.cs
+++ b/v2rayN/ServiceLib.Tests/CoreConfig/CoreConfigTestFactory.cs
@@ -59,7 +59,7 @@ internal static class CoreConfigTestFactory
                },
            WebDavItem = new WebDavItem(),
            CheckUpdateItem = new CheckUpdateItem(),
-            Fragment4RayItem = new Fragment4RayItem { Packets = "tlshello", Length = "100-200", Interval = "10-20" },
+            Fragment4RayItem = new Fragment4RayItem { Packets = "tlshello", Lengths = ["100-200"], Delays = ["10-20"] },
            Inbound =
            [
                new InItem
@@ -84,6 +84,7 @@ internal static class CoreConfigTestFactory
                ParallelQuery = false,
                Strategy4Freedom = Global.AsIs,
                Strategy4Proxy = Global.AsIs,
+                Strategy4ProxyDial = Global.AsIs,
            },
            IndexId = string.Empty,
            SubIndexId = string.Empty,
--- a/v2rayN/ServiceLib.Tests/CoreConfig/Singbox/CoreConfigSingboxServiceTests.cs
+++ b/v2rayN/ServiceLib.Tests/CoreConfig/Singbox/CoreConfigSingboxServiceTests.cs
@@ -592,4 +592,38 @@ public class CoreConfigSingboxServiceTests
        proxy.realm.stun_servers.Should().Contain("turn.cloudflare.com:3478");
        proxy.server.Should().BeNull();
    }
+
+    [Fact]
+    public void GenerateClientConfigContent_TunSystemStackWithIpv6_ShouldUsePrefixWithPeerAddress()
+    {
+        // Regression test for #9820: sing-box fails with "need one more IPv6 address in
+        // first prefix for system stack" when the TUN inbound uses a /128 IPv6 prefix.
+        var config = CoreConfigTestFactory.CreateConfig(ECoreType.sing_box);
+        config.TunModeItem.EnableTun = true;
+        config.TunModeItem.Stack = "system";
+        config.TunModeItem.EnableIPv6Address = true;
+        CoreConfigTestFactory.BindAppManagerConfig(config);
+
+        var node = CoreConfigTestFactory.CreateVmessNode(ECoreType.sing_box);
+        var context = CoreConfigTestFactory.CreateContext(config, node, ECoreType.sing_box) with
+        {
+            IsTunEnabled = true,
+        };
+
+        var result = new CoreConfigSingboxService(context).GenerateClientConfigContent();
+
+        result.Success.Should().BeTrue($"ret msg: {result.Msg}");
+        var cfg = JsonUtils.Deserialize<SingboxConfig>(result.Data!.ToString())!;
+        var tun = cfg.inbounds.First(i => i.type == "tun");
+
+        tun.address.Should().NotBeNullOrEmpty();
+        foreach (var address in tun.address!)
+        {
+            var prefixLength = int.Parse(address[(address.LastIndexOf('/') + 1)..]);
+            var isIpv6 = address.Contains(':');
+            prefixLength.Should().BeLessThanOrEqualTo(isIpv6 ? 126 : 30,
+                $"'{address}' must leave room for the peer address the system stack derives");
+        }
+    }
+
 }
--- a/v2rayN/ServiceLib.Tests/CoreConfig/V2ray/CoreConfigV2rayServiceTests.cs
+++ b/v2rayN/ServiceLib.Tests/CoreConfig/V2ray/CoreConfigV2rayServiceTests.cs
@@ -567,7 +567,7 @@ public class CoreConfigV2rayServiceTests

        var directOutbound = cfg.outbounds.FirstOrDefault(o => o.tag == Global.DirectTag && o.protocol == "freedom");
        directOutbound.Should().NotBeNull();
-        directOutbound!.settings.domainStrategy.Should().Be("UseIPv4");
+        directOutbound!.streamSettings.sockopt!.domainStrategy.Should().Be("UseIPv4");
    }

    [Fact]
--- a/v2rayN/ServiceLib.Tests/Manager/CoreManagerTests.cs
+++ b/v2rayN/ServiceLib.Tests/Manager/CoreManagerTests.cs
@@ -0,0 +1,44 @@
+using AwesomeAssertions;
+using ServiceLib.Enums;
+using ServiceLib.Manager;
+using Xunit;
+
+namespace ServiceLib.Tests.Manager;
+
+public class CoreManagerTests
+{
+    [Theory]
+    [InlineData(ECoreType.sing_box)]
+    [InlineData(ECoreType.mihomo)]
+    [InlineData(ECoreType.Xray)]
+    public void ShouldRunAsSudo_TunLaunchOnNonWindows_RequiresElevation(ECoreType coreType)
+    {
+        CoreManager.ShouldRunAsSudo(isTunLaunch: true, coreType, isNonWindows: true).Should().BeTrue();
+    }
+
+    [Fact]
+    public void ShouldRunAsSudo_NonTunLaunch_ShouldNotElevate()
+    {
+        // Regression guard for the macOS TUN failure: the elevation decision must follow
+        // the context snapshot that generated the config. A launch whose snapshot has TUN
+        // disabled must never elevate, and a launch whose snapshot has TUN enabled must
+        // elevate regardless of later changes to the live config.
+        CoreManager.ShouldRunAsSudo(isTunLaunch: false, ECoreType.sing_box, isNonWindows: true).Should().BeFalse();
+        CoreManager.ShouldRunAsSudo(isTunLaunch: false, ECoreType.Xray, isNonWindows: true).Should().BeFalse();
+    }
+
+    [Fact]
+    public void ShouldRunAsSudo_OnWindows_ShouldNotElevate()
+    {
+        CoreManager.ShouldRunAsSudo(isTunLaunch: true, ECoreType.sing_box, isNonWindows: false).Should().BeFalse();
+    }
+
+    [Theory]
+    [InlineData(ECoreType.v2fly)]
+    [InlineData(ECoreType.hysteria)]
+    [InlineData(null)]
+    public void ShouldRunAsSudo_UnsupportedCoreType_ShouldNotElevate(ECoreType? coreType)
+    {
+        CoreManager.ShouldRunAsSudo(isTunLaunch: true, coreType, isNonWindows: true).Should().BeFalse();
+    }
+}
--- a/v2rayN/ServiceLib/Common/Utils.cs
+++ b/v2rayN/ServiceLib/Common/Utils.cs
@@ -485,12 +485,17 @@ public class Utils

    public static string? DomainStrategy4Sbox(string? strategy)
    {
+        if (strategy is null)
+        {
+            return null;
+        }
+
        return strategy switch
        {
-            not null when strategy.StartsWith("UseIPv4") => "prefer_ipv4",
-            not null when strategy.StartsWith("UseIPv6") => "prefer_ipv6",
-            not null when strategy.StartsWith("ForceIPv4") => "ipv4_only",
-            not null when strategy.StartsWith("ForceIPv6") => "ipv6_only",
+            _ when strategy.StartsWith("UseIPv6") => "prefer_ipv6",
+            _ when strategy.StartsWith("UseIP") => "prefer_ipv4",
+            _ when strategy.StartsWith("ForceIPv6") => "ipv6_only",
+            _ when strategy.StartsWith("ForceIP") => "ipv4_only",
            _ => null
        };
    }
--- a/v2rayN/ServiceLib/Global.cs
+++ b/v2rayN/ServiceLib/Global.cs
@@ -2,8 +2,6 @@ namespace ServiceLib;

 public class Global
 {
-    #region const
-
    public const string AppName = "v2rayN";
    public const string GithubUrl = "https://github.com";
    public const string GithubApiUrl = "https://api.github.com/repos";
@@ -106,9 +104,7 @@ public class Global
    public const string SingboxFakeDNSTag = "fake_dns";

    public const int Hysteria2DefaultHopInt = 30;
-
    public const string PolicyGroupExcludeKeywords = @"剩余|过期|到期|重置|[Rr]emaining|[Ee]xpir|[Rr]eset";
-
    public const string PolicyGroupDefaultAllFilter = $"^(?!.*(?:{PolicyGroupExcludeKeywords})).*$";

    public static readonly List<string> PolicyGroupDefaultFilterList =
@@ -557,7 +553,6 @@ public class Global
        "http",
        "tls",
        "quic",
-        "fakedns",
    ];

    public static readonly List<int> TunMtus =
@@ -737,6 +732,12 @@ public class Global
        "reply",
    ];

+    public static readonly List<string> FakeIPRanges =
+    [
+        "198.18.0.0/15",
+        "11.0.0.0/8",
+    ];
+
    public static readonly List<string> RootCertProviders =
    [
        "system",
@@ -744,5 +745,29 @@ public class Global
        MozillaRootProvider,
    ];

-    #endregion const
+    public static readonly IReadOnlyList<string> TunIPv4Address =
+    [
+        "172.18.0.1/30",
+        "172.31.0.1/30",
+        "172.20.0.1/30",
+        "172.16.0.1/30",
+        "192.168.100.1/30",
+        "10.10.14.1/30",
+        "10.1.0.1/30",
+        "10.0.0.1/30",
+    ];
+
+    // Prefixes must leave room for a peer address (max /126); the sing-box system
+    // stack derives a gateway from the first prefix and rejects single-address prefixes.
+    public static readonly IReadOnlyList<string> TunIPv6Address =
+    [
+        "fc00::172:18:0:1/126",
+        "fc00::172:31:0:1/126",
+        "fc00::172:20:0:1/126",
+        "fc00::172:16:0:1/126",
+        "fc00::192:168:100:1/126",
+        "fc00::10:10:14:1/126",
+        "fc00::10:1:0:1/126",
+        "fc00::10:0:0:1/126",
+    ];
 }
--- a/v2rayN/ServiceLib/GlobalUsings.cs
+++ b/v2rayN/ServiceLib/GlobalUsings.cs
@@ -30,8 +30,8 @@ global using ServiceLib.Handler.Fmt;
 global using ServiceLib.Handler.SysProxy;
 global using ServiceLib.Helper;
 global using ServiceLib.Manager;
-global using ServiceLib.Models.CoreConfigs;
 global using ServiceLib.Models.Configs;
+global using ServiceLib.Models.CoreConfigs;
 global using ServiceLib.Models.Dto;
 global using ServiceLib.Models.Entities;
 global using ServiceLib.Resx;
--- a/v2rayN/ServiceLib/Handler/ConfigHandler.cs
+++ b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
@@ -92,7 +92,7 @@ public static class ConfigHandler
            EnableTun = false,
            Mtu = 9000,
            IcmpRouting = Global.TunIcmpRoutingPolicies.First(),
-            EnableLegacyProtect = false,
+            EnableLegacyProtect = true,
        };
        config.GuiItem ??= new();
        if (!Global.RootCertProviders.Contains(config.GuiItem.RootCertProvider))
@@ -115,10 +115,12 @@ public static class ConfigHandler
        config.ConstItem ??= new ConstItem();

        config.SimpleDNSItem ??= InitBuiltinSimpleDNS();
+        config.SimpleDNSItem.FakeIPRange ??= Global.FakeIPRanges.FirstOrDefault();
        config.SimpleDNSItem.GlobalFakeIp ??= true;
        config.SimpleDNSItem.BootstrapDNS ??= Global.DomainPureIPDNSAddress.FirstOrDefault();
        config.SimpleDNSItem.ServeStale ??= false;
        config.SimpleDNSItem.ParallelQuery ??= false;
+        config.SimpleDNSItem.EnableHappyEyeballs ??= false;

        config.SpeedTestItem ??= new();
        if (config.SpeedTestItem.SpeedTestTimeout < 10)
@@ -168,10 +170,24 @@ public static class ConfigHandler
        config.Fragment4RayItem ??= new()
        {
            Packets = "tlshello",
-            Length = "50-100",
-            Interval = "10-20",
-            MaxSplit = "0"
        };
+        config.Fragment4RayItem.MaxSplit ??= "0";
+
+        config.HappyEyeballs4RayItem ??= new()
+        {
+            TryDelayMs = 250,
+            PrioritizeIPv6 = false,
+            Interleave = 1,
+            MaxConcurrentTry = 4,
+        };
+        if ((config.Fragment4RayItem.Lengths ?? []).Count == 0)
+        {
+            config.Fragment4RayItem.Lengths = [config.Fragment4RayItem.Length ?? "50-100"];
+        }
+        if ((config.Fragment4RayItem.Delays ?? []).Count == 0)
+        {
+            config.Fragment4RayItem.Delays = [config.Fragment4RayItem.Interval ?? "10-20"];
+        }
        config.GlobalHotkeys ??= [];

        if (config.SystemProxyItem.SystemProxyExceptions.IsNullOrEmpty())
--- a/v2rayN/ServiceLib/Handler/SysProxy/SysProxyHandler.cs
+++ b/v2rayN/ServiceLib/Handler/SysProxy/SysProxyHandler.cs
@@ -16,7 +16,6 @@ public static class SysProxyHandler
        try
        {
            var port = AppManager.Instance.GetLocalPort(EInboundProtocol.socks);
-            var exceptions = config.SystemProxyItem.SystemProxyExceptions.Replace(" ", "");
            if (port <= 0)
            {
                return false;
@@ -24,17 +23,18 @@ public static class SysProxyHandler
            switch (type)
            {
                case ESysProxyType.ForcedChange when Utils.IsWindows():
-                    {
-                        GetWindowsProxyString(config, port, out var strProxy, out var strExceptions);
-                        ProxySettingWindows.SetProxy(strProxy, strExceptions, 2);
-                        break;
-                    }
+                    var (strProxy, strExceptions) = GetWindowsProxyString(config, port);
+                    ProxySettingWindows.SetProxy(strProxy, strExceptions, 2);
+                    break;
+
                case ESysProxyType.ForcedChange when Utils.IsLinux():
+                    var exceptions = SanitizeExceptions(config);
                    await ProxySettingLinux.SetProxy(Global.Loopback, port, exceptions);
                    break;

                case ESysProxyType.ForcedChange when Utils.IsMacOS():
-                    await ProxySettingOSX.SetProxy(Global.Loopback, port, exceptions);
+                    var exceptions2 = SanitizeExceptions(config);
+                    await ProxySettingOSX.SetProxy(Global.Loopback, port, exceptions2);
                    break;

                case ESysProxyType.ForcedClear when Utils.IsWindows():
@@ -66,15 +66,31 @@ public static class SysProxyHandler
        return true;
    }

-    private static void GetWindowsProxyString(Config config, int port, out string strProxy, out string strExceptions)
+    private static string SanitizeExceptions(Config config)
    {
-        strExceptions = config.SystemProxyItem.SystemProxyExceptions.Replace(" ", "");
+        var exceptions = config.SystemProxyItem.SystemProxyExceptions;
+        if (exceptions.IsNullOrEmpty())
+        {
+            return string.Empty;
+        }
+
+        var items = exceptions
+            .Split(',', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries)
+            .Select(item => item.Replace(" ", string.Empty))
+            .Where(item => item.Length > 0);
+
+        return string.Join(',', items);
+    }
+
+    private static (string strProxy, string strExceptions) GetWindowsProxyString(Config config, int port)
+    {
+        var strExceptions = config.SystemProxyItem.SystemProxyExceptions.Replace(" ", "");
        if (config.SystemProxyItem.NotProxyLocalAddress)
        {
            strExceptions = $"<local>;{strExceptions}";
        }

-        strProxy = string.Empty;
+        var strProxy = string.Empty;
        if (config.SystemProxyItem.SystemProxyAdvancedProtocol.IsNullOrEmpty())
        {
            strProxy = $"{Global.Loopback}:{port}";
@@ -86,6 +102,8 @@ public static class SysProxyHandler
                .Replace("{http_port}", port.ToString())
                .Replace("{socks_port}", port.ToString());
        }
+
+        return (strProxy, strExceptions);
    }

    [SupportedOSPlatform("windows")]
--- a/v2rayN/ServiceLib/Manager/CoreManager.cs
+++ b/v2rayN/ServiceLib/Manager/CoreManager.cs
@@ -183,7 +183,7 @@ public class CoreManager
        var coreInfo = CoreInfoManager.Instance.GetCoreInfo(coreType);

        var displayLog = node.ConfigType != EConfigType.Custom || node.DisplayLog;
-        var proc = await RunProcess(coreInfo, Global.CoreConfigFileName, displayLog, true);
+        var proc = await RunProcess(coreInfo, Global.CoreConfigFileName, displayLog, true, context.IsTunEnabled);
        if (proc is null)
        {
            return;
@@ -201,7 +201,7 @@ public class CoreManager
            if (result.Success)
            {
                var coreInfo = CoreInfoManager.Instance.GetCoreInfo(preCoreType);
-                var proc = await RunProcess(coreInfo, Global.CorePreConfigFileName, true, true);
+                var proc = await RunProcess(coreInfo, Global.CorePreConfigFileName, true, true, preContext.IsTunEnabled);
                if (proc is null)
                {
                    return;
@@ -289,7 +289,20 @@ public class CoreManager

    #region Process

-    private async Task<ProcessService?> RunProcess(CoreInfo? coreInfo, string configPath, bool displayLog, bool mayNeedSudo)
+    /// <summary>
+    ///     Decides whether a core launch must be elevated on non-Windows platforms.
+    ///     The TUN state comes from the immutable <see cref="CoreConfigContext" /> snapshot that
+    ///     generated the config, never from the live mutable config: the generated config and the
+    ///     launch mode must always agree, even if TUN is toggled while a reload is in flight.
+    /// </summary>
+    public static bool ShouldRunAsSudo(bool isTunLaunch, ECoreType? coreType, bool isNonWindows)
+    {
+        return isTunLaunch
+            && coreType is ECoreType.sing_box or ECoreType.mihomo or ECoreType.Xray
+            && isNonWindows;
+    }
+
+    private async Task<ProcessService?> RunProcess(CoreInfo? coreInfo, string configPath, bool displayLog, bool mayNeedSudo, bool isTunLaunch = false)
    {
        var fileName = CoreInfoManager.Instance.GetCoreExecFile(coreInfo, out var msg);
        if (fileName.IsNullOrEmpty())
@@ -301,9 +314,7 @@ public class CoreManager
        try
        {
            if (mayNeedSudo
-                && _config.TunModeItem.EnableTun
-                && (coreInfo.CoreType is ECoreType.sing_box or ECoreType.mihomo or ECoreType.Xray)
-                && Utils.IsNonWindows())
+                && ShouldRunAsSudo(isTunLaunch, coreInfo.CoreType, Utils.IsNonWindows()))
            {
                _linuxSudo = true;
                await CoreAdminManager.Instance.Init(_config, _updateFunc);
--- a/v2rayN/ServiceLib/Models/Configs/Config.cs
+++ b/v2rayN/ServiceLib/Models/Configs/Config.cs
@@ -34,6 +34,7 @@ public class Config
    public List<KeyEventItem> GlobalHotkeys { get; set; }
    public List<CoreTypeItem> CoreTypeItem { get; set; }
    public SimpleDNSItem SimpleDNSItem { get; set; }
+    public HappyEyeballs4RayItem HappyEyeballs4RayItem { get; set; }

    #endregion other entities
 }
--- a/v2rayN/ServiceLib/Models/Configs/ConfigItems.cs
+++ b/v2rayN/ServiceLib/Models/Configs/ConfigItems.cs
@@ -147,8 +147,10 @@ public class TunModeItem
    public int Mtu { get; set; }
    public bool EnableIPv6Address { get; set; }
    public string IcmpRouting { get; set; }
-    public bool EnableLegacyProtect { get; set; }
+    public bool EnableLegacyProtect { get; set; } = true;
    public List<string>? RouteExcludeAddress { get; set; }
+    public string IPv4Address { get; set; }
+    public string IPv6Address { get; set; }
 }

 [Serializable]
@@ -249,9 +251,15 @@ public class CheckUpdateItem
 public class Fragment4RayItem
 {
    public string? Packets { get; set; }
-    public string? Length { get; set; }
-    public string? Interval { get; set; }
+    public List<string>? Lengths { get; set; }
+    public List<string>? Delays { get; set; }
    public string? MaxSplit { get; set; }
+
+    // For migration from old version, remove those properties in the future
+    public string? Length { get; set; }
+
+    public string? Interval { get; set; }
+    // migration end
 }

 [Serializable]
@@ -269,14 +277,26 @@ public class SimpleDNSItem
    public bool? AddCommonHosts { get; set; }
    public bool? FakeIP { get; set; }
    public bool? GlobalFakeIp { get; set; }
+    public string? FakeIPRange { get; set; }
    public bool? BlockBindingQuery { get; set; }
    public string? DirectDNS { get; set; }
    public string? RemoteDNS { get; set; }
    public string? BootstrapDNS { get; set; }
    public string? Strategy4Freedom { get; set; }
    public string? Strategy4Proxy { get; set; }
+    public string? Strategy4ProxyDial { get; set; }
    public bool? ServeStale { get; set; }
    public bool? ParallelQuery { get; set; }
    public string? Hosts { get; set; }
    public string? DirectExpectedIPs { get; set; }
+    public bool? EnableHappyEyeballs { get; set; }
+}
+
+[Serializable]
+public class HappyEyeballs4RayItem
+{
+    public int? TryDelayMs { get; set; }
+    public bool? PrioritizeIPv6 { get; set; }
+    public int? Interleave { get; set; }
+    public int? MaxConcurrentTry { get; set; }
 }
--- a/v2rayN/ServiceLib/Models/CoreConfigs/V2rayConfig.cs
+++ b/v2rayN/ServiceLib/Models/CoreConfigs/V2rayConfig.cs
@@ -4,6 +4,7 @@ public class V2rayConfig
 {
    public Log4Ray log { get; set; }
    public object dns { get; set; }
+    public FakeDns4Ray? fakedns { get; set; }
    public List<Inbounds4Ray> inbounds { get; set; }
    public List<Outbounds4Ray> outbounds { get; set; }
    public Routing4Ray routing { get; set; }
@@ -43,6 +44,12 @@ public class Log4Ray
    public string? loglevel { get; set; }
 }

+public class FakeDns4Ray
+{
+    public string? ipPool { get; set; }
+    public long? poolSize { get; set; }
+}
+
 public class Inbounds4Ray
 {
    public string tag { get; set; }
@@ -136,8 +143,6 @@ public class Outboundsettings4Ray

    public Response4Ray? response { get; set; }

-    public string? domainStrategy { get; set; }
-
    public int? userLevel { get; set; }

    public string? secretKey { get; set; }
@@ -516,6 +521,8 @@ public class MaskSettings4Ray

    public string? length { get; set; }
    public string? delay { get; set; }
+    public List<string>? lengths { get; set; }
+    public List<string>? delays { get; set; }
    public int? maxSplit { get; set; }

    // noise
@@ -547,15 +554,20 @@ public class AccountsItem4Ray

 public class Sockopt4Ray
 {
+    public string? domainStrategy { get; set; }
+
    public string? dialerProxy { get; set; }

    [JsonPropertyName("interface")]
    public string? Interface { get; set; }
+
+    public HappyEyeballs4Ray? happyEyeballs { get; set; }
 }

-public class FragmentItem4Ray
+public class HappyEyeballs4Ray
 {
-    public string? packets { get; set; }
-    public string? length { get; set; }
-    public string? interval { get; set; }
+    public int? tryDelayMs { get; set; }
+    public bool? prioritizeIPv6 { get; set; }
+    public int? interleave { get; set; }
+    public int? maxConcurrentTry { get; set; }
 }
--- a/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
+++ b/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
@@ -3060,6 +3060,24 @@ namespace ServiceLib.Resx {
            }
        }
        
+        /// <summary>
+        ///   查找类似 Enable Happy Eyeballs 的本地化字符串。
+        /// </summary>
+        public static string TbEnableHappyEyeballs {
+            get {
+                return ResourceManager.GetString("TbEnableHappyEyeballs", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Requires the UseIP Strategy. When enabled, it attempts IPv4 and IPv6 connections simultaneously and automatically selects the faster available path. 的本地化字符串。
+        /// </summary>
+        public static string TbEnableHappyEyeballsTip {
+            get {
+                return ResourceManager.GetString("TbEnableHappyEyeballsTip", resourceCulture);
+            }
+        }
+        
        /// <summary>
        ///   查找类似 DNS via Bridge 的本地化字符串。
        /// </summary>
@@ -3088,7 +3106,7 @@ namespace ServiceLib.Resx {
        }
        
        /// <summary>
-        ///   查找类似 Applies globally by default, with built-in FakeIP filtering (sing-box only). 的本地化字符串。
+        ///   查找类似 Applies globally by default, and built-in FakeIP filtering is only built into sing-box. 的本地化字符串。
        /// </summary>
        public static string TbFakeIPTips {
            get {
@@ -3330,6 +3348,24 @@ namespace ServiceLib.Resx {
            }
        }
        
+        /// <summary>
+        ///   查找类似 Ipv4 Address 的本地化字符串。
+        /// </summary>
+        public static string TbIpv4Address {
+            get {
+                return ResourceManager.GetString("TbIpv4Address", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Ipv6 Address 的本地化字符串。
+        /// </summary>
+        public static string TbIpv6Address {
+            get {
+                return ResourceManager.GetString("TbIpv6Address", resourceCulture);
+            }
+        }
+        
        /// <summary>
        ///   查找类似 Most Stable 的本地化字符串。
        /// </summary>
@@ -3528,6 +3564,24 @@ namespace ServiceLib.Resx {
            }
        }
        
+        /// <summary>
+        ///   查找类似 Proxy Dial Resolution Strategy 的本地化字符串。
+        /// </summary>
+        public static string TbProxyDialResolveStrategy {
+            get {
+                return ResourceManager.GetString("TbProxyDialResolveStrategy", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   查找类似 Not recommended; may cause routing loops. 的本地化字符串。
+        /// </summary>
+        public static string TbProxyDialResolveStrategyTip {
+            get {
+                return ResourceManager.GetString("TbProxyDialResolveStrategyTip", resourceCulture);
+            }
+        }
+        
        /// <summary>
        ///   查找类似 Public Key 的本地化字符串。
        /// </summary>
--- a/v2rayN/ServiceLib/Resx/ResUI.fa.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.fa.resx
@@ -1495,7 +1495,7 @@
    <value>Select Profile</value>
  </data>
  <data name="TbFakeIPTips" xml:space="preserve">
-    <value>Applies globally by default, with built-in FakeIP filtering (sing-box only).</value>
+    <value>Applies globally by default, and built-in FakeIP filtering is only built into sing-box.</value>
  </data>
  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
    <value>Please Add At Least One Configuration</value>
--- a/v2rayN/ServiceLib/Resx/ResUI.fr.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.fr.resx
@@ -1492,7 +1492,7 @@
    <value>Choisir une config.</value>
  </data>
  <data name="TbFakeIPTips" xml:space="preserve">
-    <value>Actif globalement par défaut, avec filtre FakeIP intégré ; ne fonctionne que dans sing-box</value>
+    <value>Applies globally by default, and built-in FakeIP filtering is only built into sing-box.</value>
  </data>
  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
    <value>Veuillez ajouter au moins une configuration</value>
--- a/v2rayN/ServiceLib/Resx/ResUI.hu.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.hu.resx
@@ -1495,7 +1495,7 @@
    <value>Select Profile</value>
  </data>
  <data name="TbFakeIPTips" xml:space="preserve">
-    <value>Applies globally by default, with built-in FakeIP filtering (sing-box only).</value>
+    <value>Applies globally by default, and built-in FakeIP filtering is only built into sing-box.</value>
  </data>
  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
    <value>Please Add At Least One Configuration</value>
--- a/v2rayN/ServiceLib/Resx/ResUI.id.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.id.resx
@@ -1495,7 +1495,7 @@
    <value>Pilih profil</value>
  </data>
  <data name="TbFakeIPTips" xml:space="preserve">
-    <value>Berlaku secara global secara default, dengan filter FakeIP bawaan (hanya sing-box).</value>
+    <value>Applies globally by default, and built-in FakeIP filtering is only built into sing-box.</value>
  </data>
  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
    <value>Silakan tambahkan setidaknya satu konfigurasi.</value>
--- a/v2rayN/ServiceLib/Resx/ResUI.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.resx
@@ -1501,7 +1501,7 @@
    <value>Select Profile</value>
  </data>
  <data name="TbFakeIPTips" xml:space="preserve">
-    <value>Applies globally by default, with built-in FakeIP filtering (sing-box only).</value>
+    <value>Applies globally by default, and built-in FakeIP filtering is only built into sing-box.</value>
  </data>
  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
    <value>Please Add At Least One Configuration</value>
@@ -1830,4 +1830,22 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
  <data name="TbRootCertificateProviderTip" xml:space="preserve">
    <value>Only applies to the v2rayN GUI's downloads and network requests. Does not affect the core's certificate validation.</value>
  </data>
-</root>
+  <data name="TbProxyDialResolveStrategy" xml:space="preserve">
+    <value>Proxy Dial Resolution Strategy</value>
+  </data>
+  <data name="TbProxyDialResolveStrategyTip" xml:space="preserve">
+    <value>Not recommended; may cause routing loops.</value>
+  </data>
+  <data name="TbEnableHappyEyeballs" xml:space="preserve">
+    <value>Enable Happy Eyeballs</value>
+  </data>
+  <data name="TbEnableHappyEyeballsTip" xml:space="preserve">
+    <value>Requires the UseIP Strategy. When enabled, it attempts IPv4 and IPv6 connections simultaneously and automatically selects the faster available path.</value>
+  </data>
+  <data name="TbIpv6Address" xml:space="preserve">
+    <value>Ipv6 Address</value>
+  </data>
+  <data name="TbIpv4Address" xml:space="preserve">
+    <value>Ipv4 Address</value>
+  </data>
+</root>
--- a/v2rayN/ServiceLib/Resx/ResUI.ru.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.ru.resx
@@ -1501,7 +1501,7 @@
    <value>Выбрать профиль</value>
  </data>
  <data name="TbFakeIPTips" xml:space="preserve">
-    <value>По умолчанию применяется глобально, со встроенной фильтрацией FakeIP (только sing-box).</value>
+    <value>Applies globally by default, and built-in FakeIP filtering is only built into sing-box.</value>
  </data>
  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
    <value>Добавьте хотя бы одну конфигурацию</value>
--- a/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
@@ -1498,7 +1498,7 @@
    <value>选择配置</value>
  </data>
  <data name="TbFakeIPTips" xml:space="preserve">
-    <value>默认全局生效，内置 FakeIP 过滤，仅在 sing-box 中生效</value>
+    <value>默认全局生效，仅在 sing-box 中内置 FakeIP 过滤。</value>
  </data>
  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
    <value>请至少添加一个配置</value>
@@ -1827,4 +1827,22 @@
  <data name="TbRootCertificateProviderTip" xml:space="preserve">
    <value>仅用于 v2rayN 界面程序的下载及网络请求，不影响核心的证书验证。</value>
  </data>
-</root>
+  <data name="TbProxyDialResolveStrategy" xml:space="preserve">
+    <value>连接代理解析策略</value>
+  </data>
+  <data name="TbProxyDialResolveStrategyTip" xml:space="preserve">
+    <value>不建议开启，特殊情况可能回环。</value>
+  </data>
+  <data name="TbEnableHappyEyeballs" xml:space="preserve">
+    <value>启用 Happy Eyeballs</value>
+  </data>
+  <data name="TbEnableHappyEyeballsTip" xml:space="preserve">
+    <value>需配合 UseIP 策略使用。启用后将同时尝试 IPv4 和 IPv6 连接，并自动选择更快可用的路径。</value>
+  </data>
+  <data name="TbIpv6Address" xml:space="preserve">
+    <value>Ipv6 地址</value>
+  </data>
+  <data name="TbIpv4Address" xml:space="preserve">
+    <value>Ipv4 地址</value>
+  </data>
+</root>
--- a/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
@@ -1498,7 +1498,7 @@
    <value>選擇節點</value>
  </data>
  <data name="TbFakeIPTips" xml:space="preserve">
-    <value>默認全域生效，內置 FakeIP 過濾，僅在 sing-box 中生效</value>
+    <value>默認全局生效，僅在 sing-box 中內置 FakeIP 過濾。</value>
  </data>
  <data name="PleaseAddAtLeastOneServer" xml:space="preserve">
    <value>請至少添加一個節點</value>
@@ -1827,4 +1827,22 @@
  <data name="TbRootCertificateProviderTip" xml:space="preserve">
    <value>僅適用於 v2rayN GUI 的下載與網路請求，不影響核心的憑證驗證</value>
  </data>
-</root>
+  <data name="TbProxyDialResolveStrategy" xml:space="preserve">
+    <value>連線代理解析策略</value>
+  </data>
+  <data name="TbProxyDialResolveStrategyTip" xml:space="preserve">
+    <value>不建議啟用，特殊情況可能造成連線循環</value>
+  </data>
+  <data name="TbEnableHappyEyeballs" xml:space="preserve">
+    <value>啟用 Happy Eyeballs</value>
+  </data>
+  <data name="TbEnableHappyEyeballsTip" xml:space="preserve">
+    <value>需搭配 UseIP 策略，啟用後會同時嘗試 IPv4 與 IPv6 連線，並自動選擇速度較快的路徑</value>
+  </data>
+  <data name="TbIpv6Address" xml:space="preserve">
+    <value>Ipv6 位址</value>
+  </data>
+  <data name="TbIpv4Address" xml:space="preserve">
+    <value>Ipv4 位址</value>
+  </data>
+</root>
--- a/v2rayN/ServiceLib/Sample/SampleTunInbound
+++ b/v2rayN/ServiceLib/Sample/SampleTunInbound
@@ -1,27 +1,28 @@
 {
-  "tag": "tun",
-  "protocol": "tun",
-  "settings": {
-    "name": "xray_tun",
-    "MTU": 9000,
-    "gateway": [
-      "172.18.0.1/30",
-      "fdfe:dcba:9876::1/126"
-    ],
-    "dns": [
-      "172.18.0.1"
-    ],
-    "autoSystemRoutingTable": [
-      "0.0.0.0/0",
-      "::/0"
-    ],
-    "autoOutboundsInterface": "auto"
-  },
-  "sniffing": {
-    "enabled": true,
-    "destOverride": [
-      "http",
-      "tls"
-    ]
-  }
-}
+    "tag": "tun",
+    "protocol": "tun",
+    "settings": {
+        "name": "xray_tun",
+        "MTU": 9000,
+        "gateway": [
+            "172.18.0.1/30",
+            "fdfe:dcba:9876::1/126"
+        ],
+        "dns": [
+            "1.1.1.1",
+            "8.8.8.8"
+        ],
+        "autoSystemRoutingTable": [
+            "0.0.0.0/0",
+            "::/0"
+        ],
+        "autoOutboundsInterface": "auto"
+    },
+    "sniffing": {
+        "enabled": true,
+        "destOverride": [
+            "http",
+            "tls"
+        ]
+    }
+}
--- a/v2rayN/ServiceLib/Sample/mozilla_roots_pem
+++ b/v2rayN/ServiceLib/Sample/mozilla_roots_pem
--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxDnsService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxDnsService.cs
@@ -137,12 +137,12 @@ public partial class CoreConfigSingboxService
        // fake ip
        if (simpleDnsItem.FakeIP == true)
        {
+            var fakeipRange = simpleDnsItem.FakeIPRange.IsNullOrEmpty() ? Global.FakeIPRanges.First() : simpleDnsItem.FakeIPRange;
            var fakeip = new Server4Sbox
            {
                tag = Global.SingboxFakeDNSTag,
                type = "fakeip",
-                inet4_range = "198.18.0.0/15",
-                inet6_range = "fc00::/18",
+                inet4_range = fakeipRange,
            };
            _coreConfig.dns.servers.Add(fakeip);
        }
@@ -171,7 +171,7 @@ public partial class CoreConfigSingboxService
            _coreConfig.dns.rules.Add(new()
            {
                server = Global.SingboxDirectDNSTag,
-                strategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4Freedom),
+                strategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4ProxyDial),
                domain = context.ProtectDomainList.ToList(),
            });
        }
@@ -266,7 +266,7 @@ public partial class CoreConfigSingboxService
            });
        }

-        if (simpleDnsItem.FakeIP == true && simpleDnsItem.GlobalFakeIp == true)
+        if (simpleDnsItem.FakeIP == true && simpleDnsItem.GlobalFakeIp != false)
        {
            var fakeipFilterRule = JsonUtils.Deserialize<Rule4Sbox>(EmbedUtils.GetEmbedText(Global.SingboxFakeIPFilterFileName));
            fakeipFilterRule.invert = true;
--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxInboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxInboundService.cs
@@ -67,9 +67,13 @@ public partial class CoreConfigSingboxService
                tunInbound.auto_route = _config.TunModeItem.AutoRoute;
                tunInbound.strict_route = _config.TunModeItem.StrictRoute;
                tunInbound.stack = _config.TunModeItem.Stack;
-                if (_config.TunModeItem.EnableIPv6Address == false)
+
+                var address = _config.TunModeItem.IPv4Address.NullIfEmpty() ?? Global.TunIPv4Address.First();
+                tunInbound.address = [address];
+                if (_config.TunModeItem.EnableIPv6Address == true)
                {
-                    tunInbound.address = ["172.18.0.1/30"];
+                    var address6 = _config.TunModeItem.IPv6Address.NullIfEmpty() ?? Global.TunIPv6Address.First();
+                    tunInbound.address.Add(address6);
                }
                tunInbound.route_exclude_address = _config.TunModeItem.RouteExcludeAddress;

--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxOutboundService.cs
@@ -417,11 +417,15 @@ public partial class CoreConfigSingboxService
            var tls = new Tls4Sbox()
            {
                enabled = true,
-                record_fragment = _config.CoreBasicItem.EnableFragment ? true : null,
                server_name = serverName,
                insecure = _node.GetAllowInsecure(),
                alpn = _node.GetAlpn(),
            };
+            if (_config.CoreBasicItem.EnableFragment == true)
+            {
+                tls.fragment = true;
+                tls.record_fragment = true;
+            }
            if (_node.Fingerprint.IsNotEmpty())
            {
                tls.utls = new Utls4Sbox()
--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxRoutingService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxRoutingService.cs
@@ -10,18 +10,27 @@ public partial class CoreConfigSingboxService
            var simpleDnsItem = context.SimpleDnsItem;

            var defaultDomainResolverTag = Global.SingboxDirectDNSTag;
-            var directDnsStrategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4Freedom);
+            var dialDnsStrategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4ProxyDial);

            var rawDNSItem = context.RawDnsItem;
            if (rawDNSItem is { Enabled: true })
            {
                defaultDomainResolverTag = Global.SingboxLocalDNSTag;
-                directDnsStrategy = rawDNSItem.DomainStrategy4Freedom.IsNullOrEmpty() ? null : rawDNSItem.DomainStrategy4Freedom;
+                dialDnsStrategy = rawDNSItem.DomainStrategy4Freedom.IsNullOrEmpty() ? null : rawDNSItem.DomainStrategy4Freedom;
+            }
+            else if (!simpleDnsItem.Strategy4Freedom.IsNullOrEmpty())
+            {
+                var directOutbound = _coreConfig.outbounds.FirstOrDefault(o => o.tag == Global.DirectTag);
+                directOutbound?.domain_resolver = new()
+                {
+                    server = defaultDomainResolverTag,
+                    strategy = Utils.DomainStrategy4Sbox(simpleDnsItem.Strategy4Freedom),
+                };
            }
            _coreConfig.route.default_domain_resolver = new()
            {
                server = defaultDomainResolverTag,
-                strategy = directDnsStrategy
+                strategy = dialDnsStrategy
            };

            if (context.IsTunEnabled)
@@ -35,18 +44,21 @@ public partial class CoreConfigSingboxService
                }

                var lstDirectExe = BuildRoutingDirectExe();
-                _coreConfig.route.rules.Add(new()
+                if (lstDirectExe.Count > 0)
                {
-                    port = [53],
-                    action = "hijack-dns",
-                    process_path = lstDirectExe
-                });
+                    _coreConfig.route.rules.Add(new()
+                    {
+                        port = [53],
+                        action = "hijack-dns",
+                        process_path = lstDirectExe,
+                    });

-                _coreConfig.route.rules.Add(new()
-                {
-                    outbound = Global.DirectTag,
-                    process_path = lstDirectExe
-                });
+                    _coreConfig.route.rules.Add(new()
+                    {
+                        outbound = Global.DirectTag,
+                        process_path = lstDirectExe,
+                    });
+                }

                // ICMP Routing
                var icmpRouting = _config.TunModeItem.IcmpRouting ?? "";
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayDnsService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayDnsService.cs
@@ -28,7 +28,7 @@ public partial class CoreConfigV2rayService
                _coreConfig.routing.rules.Add(new RulesItem4Ray
                {
                    type = "field",
-                    inboundTag = new List<string> { Global.DnsTag },
+                    inboundTag = [Global.DnsTag],
                    outboundTag = Global.ProxyTag,
                });
                return;
@@ -43,11 +43,7 @@ public partial class CoreConfigV2rayService
                var outbound = _coreConfig.outbounds.FirstOrDefault(t => t is { protocol: "freedom", tag: Global.DirectTag });
                if (outbound != null)
                {
-                    outbound.settings = new()
-                    {
-                        domainStrategy = strategy4Freedom,
-                        userLevel = 0
-                    };
+                    FillSockoptDomainStrategy(outbound, strategy4Freedom);
                }
            }

@@ -64,6 +60,22 @@ public partial class CoreConfigV2rayService
                    .ForEach(outbound => outbound.targetStrategy = strategy4Proxy);
            }

+            var strategy4DialProxy = simpleDnsItem?.Strategy4ProxyDial ?? Global.AsIs;
+            //Outbound DialProxy domainStrategy
+            if (strategy4DialProxy.IsNotEmpty() && strategy4DialProxy != Global.AsIs)
+            {
+                var xraySupportConfigTypeNames = Global.XraySupportConfigType
+                        .Select(x => x == EConfigType.Hysteria2 ? "hysteria" : Global.ProtocolTypes[x])
+                        .ToHashSet();
+                _coreConfig.outbounds
+                    .Where(t => xraySupportConfigTypeNames.Contains(t.protocol))
+                    .ToList()
+                    .ForEach(outbound =>
+                    {
+                        FillSockoptDomainStrategy(outbound, strategy4DialProxy);
+                    });
+            }
+
            FillDnsServers(dnsItem);
            FillDnsHosts(dnsItem);

@@ -108,6 +120,33 @@ public partial class CoreConfigV2rayService
        }
    }

+    private void GenFakeDns()
+    {
+        var fakeipRange = _config.SimpleDNSItem.FakeIPRange.IsNullOrEmpty() ? Global.FakeIPRanges.First() : _config.SimpleDNSItem.FakeIPRange;
+        var poolSize = 65535L;
+        try
+        {
+            var fakeipNetwork = IPNetwork2.Parse(fakeipRange);
+            var totalIPs = fakeipNetwork.Total;
+            // see https://github.com/XTLS/Xray-core/blob/6e3322d219140a025285ded1114fe17a5edb74d8/app/dns/fakedns/fake.go#L88
+            // if math.Log2(float64(lruSize)) >= float64(rooms) { return errors.New("LRU size is bigger than subnet size").AtError() }
+            totalIPs -= 1;
+            if (totalIPs > 0)
+            {
+                poolSize = (totalIPs >= long.MaxValue) ? long.MaxValue : (long)totalIPs;
+            }
+        }
+        catch
+        {
+            // Ignore
+        }
+        _coreConfig.fakedns = new()
+        {
+            ipPool = fakeipRange,
+            poolSize = poolSize,
+        };
+    }
+
    private void FillDnsServers(Dns4Ray dnsItem)
    {
        var simpleDNSItem = context.SimpleDnsItem;
@@ -234,6 +273,23 @@ public partial class CoreConfigV2rayService

        var directDnsTagIndex = 1;

+        if (simpleDNSItem.FakeIP == true)
+        {
+            var fakeIPMatchDomain = new HashSet<string>(proxyDomainList);
+            fakeIPMatchDomain.UnionWith(proxyGeositeList);
+            if (simpleDNSItem.GlobalFakeIp != false)
+            {
+                fakeIPMatchDomain.UnionWith(directDomainList);
+                fakeIPMatchDomain.UnionWith(directGeositeList);
+                fakeIPMatchDomain.UnionWith(expectedDomainList);
+            }
+            if (fakeIPMatchDomain.Count > 0)
+            {
+                GenFakeDns();
+                AddDnsServers(["fakedns"], fakeIPMatchDomain.ToList());
+            }
+        }
+
        AddDnsServers(remoteDNSAddress, proxyDomainList);
        AddDnsServers(directDNSAddress, directDomainList, true);
        AddDnsServers(remoteDNSAddress, proxyGeositeList);
@@ -384,11 +440,9 @@ public partial class CoreConfigV2rayService
                var outbound = _coreConfig.outbounds.FirstOrDefault(t => t is { protocol: "freedom", tag: Global.DirectTag });
                if (outbound != null)
                {
-                    outbound.settings = new()
-                    {
-                        domainStrategy = domainStrategy4Freedom,
-                        userLevel = 0,
-                    };
+                    outbound.streamSettings ??= new();
+                    outbound.streamSettings.sockopt ??= new();
+                    outbound.streamSettings.sockopt.domainStrategy = domainStrategy4Freedom;
                }
            }

@@ -471,4 +525,28 @@ public partial class CoreConfigV2rayService
        };
        servers.AsArray().Add(JsonUtils.SerializeToNode(dnsServer));
    }
+
+    private void FillSockoptDomainStrategy(Outbounds4Ray outbound, string? domainStrategy, bool skipHappyEyeballs = false)
+    {
+        if (domainStrategy.IsNullOrEmpty())
+        {
+            return;
+        }
+        outbound.streamSettings ??= new();
+        outbound.streamSettings.sockopt ??= new();
+        var sockopt = outbound.streamSettings.sockopt;
+        sockopt.domainStrategy = domainStrategy;
+
+        if (skipHappyEyeballs || _config.SimpleDNSItem.EnableHappyEyeballs != true)
+        {
+            return;
+        }
+        var happyEyeballsItem = _config.HappyEyeballs4RayItem;
+        sockopt.happyEyeballs ??= new();
+        var happyEyeballs = sockopt.happyEyeballs;
+        happyEyeballs.tryDelayMs = happyEyeballsItem.TryDelayMs;
+        happyEyeballs.prioritizeIPv6 = happyEyeballsItem.PrioritizeIPv6;
+        happyEyeballs.interleave = happyEyeballsItem.Interleave;
+        happyEyeballs.maxConcurrentTry = happyEyeballsItem.MaxConcurrentTry;
+    }
 }
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayInboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayInboundService.cs
@@ -63,11 +63,16 @@ public partial class CoreConfigV2rayService
                    new Inbounds4Ray();
                tunInbound.settings.name = context.IsMacOS ? $"utun{new Random().Next(99)}" : "xray_tun";
                tunInbound.settings.MTU = _config.TunModeItem.Mtu;
-                if (!_config.TunModeItem.EnableIPv6Address)
+
+                var address = _config.TunModeItem.IPv4Address.NullIfEmpty() ?? Global.TunIPv4Address.First();
+                tunInbound.settings.gateway = [address];
+                if (_config.TunModeItem.EnableIPv6Address == true)
                {
-                    tunInbound.settings.gateway = ["172.18.0.1/30"];
-                    tunInbound.settings.autoSystemRoutingTable = ["0.0.0.0/0"];
+                    var address6 = _config.TunModeItem.IPv6Address.NullIfEmpty() ?? Global.TunIPv6Address.First();
+                    tunInbound.settings.gateway.Add(address6);
                }
+
+                tunInbound.settings.autoSystemRoutingTable = ["0.0.0.0/0"];
                var bindInterface = _config.CoreBasicItem.BindInterface?.TrimEx();
                if (!bindInterface.IsNullOrEmpty())
                {
@@ -152,6 +157,16 @@ public partial class CoreConfigV2rayService
        inbound.sniffing.destOverride = inItem.DestOverride;
        inbound.sniffing.routeOnly = inItem.RouteOnly;

+        if (_config.SimpleDNSItem.FakeIP == true)
+        {
+            // Ensure destOverride contains "fakedns" if FakeIP is enabled
+            inbound.sniffing.destOverride ??= [];
+            if (!inbound.sniffing.destOverride.Contains("fakedns"))
+            {
+                inbound.sniffing.destOverride.Add("fakedns");
+            }
+        }
+
        return inbound;
    }
 }
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
@@ -865,21 +865,10 @@ public partial class CoreConfigV2rayService
                                             && (n.streamSettings?.sockopt?.dialerProxy?.IsNullOrEmpty() ?? true))
                .ToList();

-        var (fragmentMask, noiseMask) = BuildFragmentsMasks();
+        var fragmentMask = BuildFragmentsMasks();

        foreach (var outbound in actOutboundWithTlsList)
        {
-            //var packets = configPackets;
-            //if (outbound.streamSettings.security == Global.StreamSecurityReality
-            //    && packets == "tlshello")
-            //{
-            //    packets = "1-3";
-            //}
-            //else if (outbound.streamSettings.security == Global.StreamSecurity
-            //         && packets != "tlshello")
-            //{
-            //    packets = "tlshello";
-            //}
            var finalMaskJsonObj = JsonUtils.ParseJson(JsonUtils.Serialize(outbound.streamSettings?.finalmask)) as JsonObject ?? new JsonObject();
            // tcp fragment
            var tcpFinalmaskList = finalMaskJsonObj["tcp"] as JsonArray ?? [];
@@ -888,13 +877,6 @@ public partial class CoreConfigV2rayService
                tcpFinalmaskList.Add(JsonUtils.SerializeToNode(fragmentMask));
                finalMaskJsonObj["tcp"] = tcpFinalmaskList;
            }
-            // udp noise
-            var udpFinalmaskList = finalMaskJsonObj["udp"] as JsonArray ?? [];
-            if (udpFinalmaskList.Count == 0)
-            {
-                udpFinalmaskList.Add(JsonUtils.SerializeToNode(noiseMask));
-                finalMaskJsonObj["udp"] = udpFinalmaskList;
-            }
            // write back
            outbound.streamSettings.finalmask = finalMaskJsonObj;
        }
@@ -902,7 +884,7 @@ public partial class CoreConfigV2rayService

    private void ApplyFinalFragment()
    {
-        var (fragmentMask, noiseMask) = BuildFragmentsMasks();
+        var fragmentMask = BuildFragmentsMasks();
        var actOutboundList = _coreConfig.outbounds.Where(n => n.tag.StartsWith(Global.ProxyTag)).ToList();

        var fragmentFreedom = new Outbounds4Ray()
@@ -914,9 +896,8 @@ public partial class CoreConfigV2rayService
                finalmask = new Finalmask4Ray
                {
                    tcp = [fragmentMask],
-                    udp = [noiseMask],
-                }
-            }
+                },
+            },
        };

        foreach (var outbound in actOutboundList)
@@ -934,13 +915,22 @@ public partial class CoreConfigV2rayService
        }
    }

-    private (Mask4Ray tcpFragment, Mask4Ray udpNoise) BuildFragmentsMasks()
+    private Mask4Ray BuildFragmentsMasks()
    {
        var configPackets = _config.Fragment4RayItem?.Packets.NullIfEmpty() ?? "tlshello";
-        var configLength = _config.Fragment4RayItem?.Length.NullIfEmpty() ?? "50-100";
-        var configDelay = _config.Fragment4RayItem?.Interval.NullIfEmpty() ?? "10-20";
+        var configLengths = _config.Fragment4RayItem?.Lengths ?? [];
+        var configDelays = _config.Fragment4RayItem?.Delays ?? [];
        var configMaxSplit = _config.Fragment4RayItem?.MaxSplit.NullIfEmpty() ?? "0";

+        if (configLengths.Count == 0)
+        {
+            configLengths = ["50-100"];
+        }
+        if (configDelays.Count == 0)
+        {
+            configDelays = ["10-20"];
+        }
+
        var maxSplit = 0;
        var parts = configMaxSplit.Split('-');
        if (parts.Length > 0 && int.TryParse(parts[0], out var ms))
@@ -954,21 +944,15 @@ public partial class CoreConfigV2rayService
            settings = new MaskSettings4Ray
            {
                packets = configPackets,
-                length = configLength,
-                delay = configDelay,
+                lengths = configLengths,
+                delays = configDelays,
                maxSplit = maxSplit,
-            }
-        };
-        var noiseMask = new Mask4Ray
-        {
-            type = "noise",
-            settings = new MaskSettings4Ray
-            {
-                length = "10-20",
-                delay = "10-16",
-            }
+                // For legacy xray compatibility, remove this in the future
+                length = configLengths.FirstOrDefault(),
+                delay = configDelays.FirstOrDefault(),
+            },
        };

-        return (fragmentMask, noiseMask);
+        return fragmentMask;
    }
 }
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayRoutingService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayRoutingService.cs
@@ -14,17 +14,20 @@ public partial class CoreConfigV2rayService
                    _coreConfig.routing.rules.AddRange(tunRules);
                }
                var lstDirectExe = BuildRoutingDirectExe();
-                _coreConfig.routing.rules.Add(new()
+                if (lstDirectExe.Count > 0)
                {
-                    port = "53",
-                    process = lstDirectExe,
-                    outboundTag = Global.DnsOutboundTag,
-                });
-                _coreConfig.routing.rules.Add(new()
-                {
-                    process = lstDirectExe,
-                    outboundTag = Global.DirectTag,
-                });
+                    _coreConfig.routing.rules.Add(new()
+                    {
+                        port = "53",
+                        process = lstDirectExe,
+                        outboundTag = Global.DnsOutboundTag,
+                    });
+                    _coreConfig.routing.rules.Add(new()
+                    {
+                        process = lstDirectExe,
+                        outboundTag = Global.DirectTag,
+                    });
+                }
                _coreConfig.routing.rules.Add(new()
                {
                    inboundTag = ["tun"],
--- a/v2rayN/ServiceLib/ViewModels/AddServer2ViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/AddServer2ViewModel.cs
@@ -3,6 +3,7 @@ namespace ServiceLib.ViewModels;
 public class AddServer2ViewModel : MyReactiveObject, ICloseable
 {
    public event EventHandler? RequestClose;
+
    public Interaction<Unit, string?> BrowseConfigFileInteraction { get; } = new();

    [Reactive]
--- a/v2rayN/ServiceLib/ViewModels/DNSSettingViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/DNSSettingViewModel.cs
@@ -4,19 +4,22 @@ public class DNSSettingViewModel : MyReactiveObject, ICloseable
 {
    public event EventHandler? RequestClose;

-    [Reactive] public bool? UseSystemHosts { get; set; }
-    [Reactive] public bool? AddCommonHosts { get; set; }
-    [Reactive] public bool? FakeIP { get; set; }
-    [Reactive] public bool? BlockBindingQuery { get; set; }
-    [Reactive] public string? DirectDNS { get; set; }
-    [Reactive] public string? RemoteDNS { get; set; }
-    [Reactive] public string? BootstrapDNS { get; set; }
-    [Reactive] public string? Strategy4Freedom { get; set; }
-    [Reactive] public string? Strategy4Proxy { get; set; }
-    [Reactive] public string? Hosts { get; set; }
-    [Reactive] public string? DirectExpectedIPs { get; set; }
-    [Reactive] public bool? ParallelQuery { get; set; }
-    [Reactive] public bool? ServeStale { get; set; }
+    [Reactive] public bool UseSystemHosts { get; set; }
+    [Reactive] public bool AddCommonHosts { get; set; }
+    [Reactive] public bool FakeIP { get; set; }
+    [Reactive] public string FakeIPRange { get; set; }
+    [Reactive] public bool BlockBindingQuery { get; set; }
+    [Reactive] public string DirectDNS { get; set; }
+    [Reactive] public string RemoteDNS { get; set; }
+    [Reactive] public string BootstrapDNS { get; set; }
+    [Reactive] public string Strategy4Freedom { get; set; }
+    [Reactive] public string Strategy4Proxy { get; set; }
+    [Reactive] public string Strategy4ProxyDial { get; set; }
+    [Reactive] public string Hosts { get; set; }
+    [Reactive] public string DirectExpectedIPs { get; set; }
+    [Reactive] public bool ParallelQuery { get; set; }
+    [Reactive] public bool ServeStale { get; set; }
+    [Reactive] public bool EnableHappyEyeballs { get; set; }

    [Reactive] public bool UseSystemHostsCompatible { get; set; }
    [Reactive] public string DomainStrategy4FreedomCompatible { get; set; } = string.Empty;
@@ -67,20 +70,22 @@ public class DNSSettingViewModel : MyReactiveObject, ICloseable
    {
        _config = AppManager.Instance.Config;
        var item = _config.SimpleDNSItem;
-        UseSystemHosts = item.UseSystemHosts;
-        AddCommonHosts = item.AddCommonHosts;
-        FakeIP = item.FakeIP;
-        BlockBindingQuery = item.BlockBindingQuery;
-        DirectDNS = item.DirectDNS;
-        RemoteDNS = item.RemoteDNS;
-        BootstrapDNS = item.BootstrapDNS;
-        Strategy4Freedom = item.Strategy4Freedom;
-        Strategy4Proxy = item.Strategy4Proxy;
-        Hosts = item.Hosts;
-        DirectExpectedIPs = item.DirectExpectedIPs;
-        ParallelQuery = item.ParallelQuery;
-        ServeStale = item.ServeStale;
-
+        UseSystemHosts = item.UseSystemHosts ?? false;
+        AddCommonHosts = item.AddCommonHosts ?? false;
+        FakeIP = item.FakeIP ?? false;
+        FakeIPRange = item.FakeIPRange ?? string.Empty;
+        BlockBindingQuery = item.BlockBindingQuery ?? false;
+        DirectDNS = item.DirectDNS ?? string.Empty;
+        RemoteDNS = item.RemoteDNS ?? string.Empty;
+        BootstrapDNS = item.BootstrapDNS ?? string.Empty;
+        Strategy4Freedom = item.Strategy4Freedom ?? string.Empty;
+        Strategy4Proxy = item.Strategy4Proxy ?? string.Empty;
+        Strategy4ProxyDial = item.Strategy4ProxyDial ?? string.Empty;
+        Hosts = item.Hosts ?? string.Empty;
+        DirectExpectedIPs = item.DirectExpectedIPs ?? string.Empty;
+        ParallelQuery = item.ParallelQuery ?? false;
+        ServeStale = item.ServeStale ?? false;
+        EnableHappyEyeballs = item.EnableHappyEyeballs ?? false;
        var item1 = await AppManager.Instance.GetDNSItem(ECoreType.Xray);
        RayCustomDNSEnableCompatible = item1.Enabled;
        UseSystemHostsCompatible = item1.UseSystemHosts;
@@ -102,17 +107,19 @@ public class DNSSettingViewModel : MyReactiveObject, ICloseable
        _config.SimpleDNSItem.UseSystemHosts = UseSystemHosts;
        _config.SimpleDNSItem.AddCommonHosts = AddCommonHosts;
        _config.SimpleDNSItem.FakeIP = FakeIP;
+        _config.SimpleDNSItem.FakeIPRange = FakeIPRange;
        _config.SimpleDNSItem.BlockBindingQuery = BlockBindingQuery;
        _config.SimpleDNSItem.DirectDNS = DirectDNS;
        _config.SimpleDNSItem.RemoteDNS = RemoteDNS;
        _config.SimpleDNSItem.BootstrapDNS = BootstrapDNS;
        _config.SimpleDNSItem.Strategy4Freedom = Strategy4Freedom;
        _config.SimpleDNSItem.Strategy4Proxy = Strategy4Proxy;
+        _config.SimpleDNSItem.Strategy4ProxyDial = Strategy4ProxyDial;
        _config.SimpleDNSItem.Hosts = Hosts;
        _config.SimpleDNSItem.DirectExpectedIPs = DirectExpectedIPs;
        _config.SimpleDNSItem.ParallelQuery = ParallelQuery;
        _config.SimpleDNSItem.ServeStale = ServeStale;
-
+        _config.SimpleDNSItem.EnableHappyEyeballs = EnableHappyEyeballs;
        if (NormalDNSCompatible.IsNotEmpty())
        {
            var obj = JsonUtils.ParseJson(NormalDNSCompatible);
--- a/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/MainWindowViewModel.cs
@@ -263,6 +263,11 @@ public class MainWindowViewModel : MyReactiveObject

        #endregion AppEvents

+        ProfilesViewModel.RefreshServersRequested
+            .AsObservable()
+            .ObserveOn(RxSchedulers.MainThreadScheduler)
+            .Subscribe(async _ => await RefreshServers());
+
        var vmReloadRequestedList = new List<IObservable<Unit>>
        {
            ProfilesViewModel.ReloadRequested.AsObservable(),
@@ -394,8 +399,8 @@ public class MainWindowViewModel : MyReactiveObject

    private async Task RefreshServers()
    {
-        await ProfilesViewModel.RefreshServers();
-        await StatusBarViewModel.RefreshServers();
+        await ProfilesViewModel.RefreshServersBiz();
+        await StatusBarViewModel.RefreshServersBiz();

        // await Task.Delay(200);
    }
--- a/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs
@@ -29,24 +29,12 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
    [Reactive] public bool EnableFragment { get; set; }
    [Reactive] public bool EnableFinalFragment { get; set; }
    [Reactive] public string FragmentPackets { get; set; }
-    [Reactive] public string FragmentLength { get; set; }
-    [Reactive] public string FragmentInterval { get; set; }
+    [Reactive] public string FragmentLengths { get; set; }
+    [Reactive] public string FragmentDelays { get; set; }
    [Reactive] public string FragmentMaxSplit { get; set; }

    #endregion Core

-    #region Core KCP
-
-    //[Reactive] public int Kcpmtu { get; set; }
-    //[Reactive] public int Kcptti { get; set; }
-    //[Reactive] public int KcpuplinkCapacity { get; set; }
-    //[Reactive] public int KcpdownlinkCapacity { get; set; }
-    //[Reactive] public int KcpreadBufferSize { get; set; }
-    //[Reactive] public int KcpwriteBufferSize { get; set; }
-    //[Reactive] public bool Kcpcongestion { get; set; }
-
-    #endregion Core KCP
-
    #region UI

    [Reactive] public bool AutoRun { get; set; }
@@ -107,6 +95,8 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
    [Reactive] public string TunIcmpRouting { get; set; }
    [Reactive] public bool TunEnableLegacyProtect { get; set; }
    [Reactive] public string TunRouteExcludeAddress { get; set; }
+    [Reactive] public string TunIPv4Address { get; set; }
+    [Reactive] public string TunIPv6Address { get; set; }

    #endregion Tun mode

@@ -150,6 +140,7 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
        SecondLocalPortEnabled = inbound.SecondLocalPortEnabled;
        UdpEnabled = inbound.UdpEnabled;
        SniffingEnabled = inbound.SniffingEnabled;
+        DestOverride = inbound.DestOverride ?? [];
        RouteOnly = inbound.RouteOnly;
        AllowLANConn = inbound.AllowLANConn;
        NewPort4LAN = inbound.NewPort4LAN;
@@ -168,24 +159,12 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
        EnableFragment = _config.CoreBasicItem.EnableFragment;
        EnableFinalFragment = _config.CoreBasicItem.EnableFinalFragment;
        FragmentPackets = _config.Fragment4RayItem?.Packets;
-        FragmentLength = _config.Fragment4RayItem?.Length;
-        FragmentInterval = _config.Fragment4RayItem?.Interval;
+        FragmentLengths = Utils.List2String(_config.Fragment4RayItem?.Lengths);
+        FragmentDelays = Utils.List2String(_config.Fragment4RayItem?.Delays);
        FragmentMaxSplit = _config.Fragment4RayItem?.MaxSplit;

        #endregion Core

-        #region Core KCP
-
-        //Kcpmtu = _config.kcpItem.mtu;
-        //Kcptti = _config.kcpItem.tti;
-        //KcpuplinkCapacity = _config.kcpItem.uplinkCapacity;
-        //KcpdownlinkCapacity = _config.kcpItem.downlinkCapacity;
-        //KcpreadBufferSize = _config.kcpItem.readBufferSize;
-        //KcpwriteBufferSize = _config.kcpItem.writeBufferSize;
-        //Kcpcongestion = _config.kcpItem.congestion;
-
-        #endregion Core KCP
-
        #region UI

        AutoRun = _config.GuiItem.AutoRun;
@@ -237,6 +216,8 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
        TunIcmpRouting = _config.TunModeItem.IcmpRouting;
        TunEnableLegacyProtect = _config.TunModeItem.EnableLegacyProtect;
        TunRouteExcludeAddress = Utils.List2String(_config.TunModeItem.RouteExcludeAddress, true);
+        TunIPv4Address = _config.TunModeItem.IPv4Address;
+        TunIPv6Address = _config.TunModeItem.IPv6Address;

        #endregion Tun mode

@@ -309,34 +290,33 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
            NoticeManager.Instance.Enqueue(ResUI.FillLocalListeningPort);
            return;
        }
+        var fragmentLengths = Utils.String2List(FragmentLengths) ?? [];
+        var fragmentDelays = Utils.String2List(FragmentDelays) ?? [];
+        if (fragmentLengths.Any(item => !Utils.TryParseRange(item, 0, int.MaxValue, out _, out _))
+            || fragmentDelays.Any(item => !Utils.TryParseRange(item, 0, int.MaxValue, out _, out _))
+            || (FragmentMaxSplit.IsNotEmpty() && !Utils.TryParseMaxSplit(FragmentMaxSplit, 0, 10000, out _, out _)))
+        {
+            NoticeManager.Instance.Enqueue(ResUI.FillFragmentParameterError);
+            return;
+        }
        var needReboot = EnableStatistics != _config.GuiItem.EnableStatistics
                          || DisplayRealTimeSpeed != _config.GuiItem.DisplayRealTimeSpeed
                        || EnableDragDropSort != _config.UiItem.EnableDragDropSort
                        || EnableHWA != _config.GuiItem.EnableHWA
                        || CurrentFontFamily != _config.UiItem.CurrentFontFamily;

-        //if (Utile.IsNullOrEmpty(Kcpmtu.ToString()) || !Utile.IsNumeric(Kcpmtu.ToString())
-        //       || Utile.IsNullOrEmpty(Kcptti.ToString()) || !Utile.IsNumeric(Kcptti.ToString())
-        //       || Utile.IsNullOrEmpty(KcpuplinkCapacity.ToString()) || !Utile.IsNumeric(KcpuplinkCapacity.ToString())
-        //       || Utile.IsNullOrEmpty(KcpdownlinkCapacity.ToString()) || !Utile.IsNumeric(KcpdownlinkCapacity.ToString())
-        //       || Utile.IsNullOrEmpty(KcpreadBufferSize.ToString()) || !Utile.IsNumeric(KcpreadBufferSize.ToString())
-        //       || Utile.IsNullOrEmpty(KcpwriteBufferSize.ToString()) || !Utile.IsNumeric(KcpwriteBufferSize.ToString()))
-        //{
-        //    NoticeHandler.Instance.Enqueue(ResUI.FillKcpParameters);
-        //    return;
-        //}
-
        //Core
-        _config.Inbound.First().LocalPort = LocalPort;
-        _config.Inbound.First().SecondLocalPortEnabled = SecondLocalPortEnabled;
-        _config.Inbound.First().UdpEnabled = UdpEnabled;
-        _config.Inbound.First().SniffingEnabled = SniffingEnabled;
-        _config.Inbound.First().DestOverride = DestOverride?.ToList();
-        _config.Inbound.First().RouteOnly = RouteOnly;
-        _config.Inbound.First().AllowLANConn = AllowLANConn;
-        _config.Inbound.First().NewPort4LAN = NewPort4LAN;
-        _config.Inbound.First().User = User;
-        _config.Inbound.First().Pass = Pass;
+        var inbound = _config.Inbound.First();
+        inbound.LocalPort = LocalPort;
+        inbound.SecondLocalPortEnabled = SecondLocalPortEnabled;
+        inbound.UdpEnabled = UdpEnabled;
+        inbound.SniffingEnabled = SniffingEnabled;
+        inbound.DestOverride = DestOverride?.ToList();
+        inbound.RouteOnly = RouteOnly;
+        inbound.AllowLANConn = AllowLANConn;
+        inbound.NewPort4LAN = NewPort4LAN;
+        inbound.User = User;
+        inbound.Pass = Pass;
        if (_config.Inbound.Count > 1)
        {
            _config.Inbound.RemoveAt(1);
@@ -351,30 +331,12 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
        _config.CoreBasicItem.EnableCacheFile4Sbox = EnableCacheFile4Sbox;
        _config.HysteriaItem.UpMbps = HyUpMbps ?? 0;
        _config.HysteriaItem.DownMbps = HyDownMbps ?? 0;
-        if (EnableFragment)
-        {
-            if (!Utils.TryParseRange(FragmentLength, 0, int.MaxValue, out _, out _))
-            {
-                NoticeManager.Instance.Enqueue(ResUI.FillFragmentParameterError);
-                return;
-            }
-            if (!Utils.TryParseRange(FragmentInterval, 1, 100, out _, out _))
-            {
-                NoticeManager.Instance.Enqueue(ResUI.FillFragmentParameterError);
-                return;
-            }
-            if (FragmentMaxSplit.IsNotEmpty()
-                && !Utils.TryParseMaxSplit(FragmentMaxSplit, 0, 10000, out _, out _))
-            {
-                NoticeManager.Instance.Enqueue(ResUI.FillFragmentParameterError);
-                return;
-            }
-        }
        _config.CoreBasicItem.EnableFragment = EnableFragment;
        _config.CoreBasicItem.EnableFinalFragment = EnableFinalFragment;
+        _config.Fragment4RayItem ??= new();
        _config.Fragment4RayItem.Packets = FragmentPackets;
-        _config.Fragment4RayItem.Length = FragmentLength;
-        _config.Fragment4RayItem.Interval = FragmentInterval;
+        _config.Fragment4RayItem.Lengths = fragmentLengths;
+        _config.Fragment4RayItem.Delays = fragmentDelays;
        _config.Fragment4RayItem.MaxSplit = FragmentMaxSplit;

        _config.GuiItem.AutoRun = AutoRun;
@@ -420,6 +382,8 @@ public class OptionSettingViewModel : MyReactiveObject, ICloseable
        _config.TunModeItem.IcmpRouting = TunIcmpRouting;
        _config.TunModeItem.EnableLegacyProtect = TunEnableLegacyProtect;
        _config.TunModeItem.RouteExcludeAddress = Utils.String2List(TunRouteExcludeAddress);
+        _config.TunModeItem.IPv4Address = TunIPv4Address;
+        _config.TunModeItem.IPv6Address = TunIPv6Address;

        //coreType
        await SaveCoreType();
--- a/v2rayN/ServiceLib/ViewModels/ProfilesSelectViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/ProfilesSelectViewModel.cs
@@ -3,6 +3,7 @@ namespace ServiceLib.ViewModels;
 public class ProfilesSelectViewModel : MyReactiveObject, ICloseable
 {
    public event EventHandler? RequestClose;
+
    public Interaction<Unit, Unit> ProfilesFocusInteraction { get; } = new();

    #region private prop
--- a/v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs
@@ -11,6 +11,7 @@ public class ProfilesViewModel : MyReactiveObject
    public Interaction<Unit, Unit> AdjustMainLvColWidthInteraction { get; } = new();

    public EventChannel<Unit> ReloadRequested { get; } = new();
+    public EventChannel<Unit> RefreshServersRequested { get; } = new();

    #region private prop

@@ -368,12 +369,14 @@ public class ProfilesViewModel : MyReactiveObject

    public async Task RefreshServers()
    {
-        await RefreshServersBiz();
+        RefreshServersRequested.Publish();

        // await Task.Delay(200);
+
+        await Task.CompletedTask;
    }

-    private async Task RefreshServersBiz()
+    public async Task RefreshServersBiz()
    {
        var lstModel = await GetProfileItemsEx(_config.SubIndexId, _serverFilter);
        _lstProfile = JsonUtils.Deserialize<List<ProfileItem>>(JsonUtils.Serialize(lstModel)) ?? [];
--- a/v2rayN/ServiceLib/ViewModels/RoutingRuleSettingViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/RoutingRuleSettingViewModel.cs
@@ -3,6 +3,7 @@ namespace ServiceLib.ViewModels;
 public class RoutingRuleSettingViewModel : MyReactiveObject, ICloseable
 {
    public event EventHandler? RequestClose;
+
    public Interaction<string, bool> ShowYesNoInteraction { get; } = new();
    public Interaction<string, Unit> SetClipboardDataInteraction { get; } = new();
    public Interaction<Unit, string?> ReadTextFromClipboardInteraction { get; } = new();
--- a/v2rayN/ServiceLib/ViewModels/StatusBarViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/StatusBarViewModel.cs
@@ -264,12 +264,7 @@ public class StatusBarViewModel : MyReactiveObject
        await Task.Delay(1000);
    }

-    public async Task RefreshServers()
-    {
-        await RefreshServersBiz();
-    }
-
-    private async Task RefreshServersBiz()
+    public async Task RefreshServersBiz()
    {
        await RefreshServersMenu();

--- a/v2rayN/v2rayN.Desktop/App.axaml
+++ b/v2rayN/v2rayN.Desktop/App.axaml
@@ -22,6 +22,14 @@
        <StyleInclude Source="Assets/GlobalStyles.axaml" />
        <StyleInclude Source="avares://Semi.Avalonia.DataGrid/Index.axaml" />
        <dialogHost:DialogHostStyles />
+
+        <Style Selector="dialogHost|DialogHost">
+            <Setter Property="OverlayBackground" Value="{DynamicResource SemiColorOverlayBackground}" />
+            <Setter Property="Background" Value="{DynamicResource SemiColorFill0}" />
+
+            <Setter Property="dialogHost:DialogHostStyle.BoxShadow" Value="{DynamicResource SemiShadowElevated}" />
+            <Setter Property="dialogHost:DialogHostStyle.CornerRadius" Value="6" />
+        </Style>
    </Application.Styles>

    <TrayIcon.Icons>
--- a/v2rayN/v2rayN.Desktop/Views/AddGroupServerWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/AddGroupServerWindow.axaml.cs
@@ -26,6 +26,11 @@ public partial class AddGroupServerWindow : WindowBase<AddGroupServerViewModel>

        this.WhenActivated(disposables =>
        {
+            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
+                .WhereNotNull()
+                .Subscribe(InitializeData)
+                .DisposeWith(disposables);
+
            this.Bind(ViewModel, vm => vm.SelectedSource.Remarks, v => v.txtRemarks.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.CoreType, v => v.cmbCoreType.SelectedValue).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.PolicyGroupType, v => v.cmbPolicyGroupType.SelectedValue).DisposeWith(disposables);
@@ -43,11 +48,6 @@ public partial class AddGroupServerWindow : WindowBase<AddGroupServerViewModel>
            this.BindCommand(ViewModel, vm => vm.MoveBottomCmd, v => v.menuMoveBottom).DisposeWith(disposables);

            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
-
-            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
-                .WhereNotNull()
-                .Subscribe(InitializeData)
-                .DisposeWith(disposables);
        });

        // Context menu actions that require custom logic (Add, SelectAll)
--- a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
@@ -38,6 +38,11 @@ public partial class AddServerWindow : WindowBase<AddServerViewModel>

        this.WhenActivated(disposables =>
        {
+            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
+                .WhereNotNull()
+                .Subscribe(InitializeData)
+                .DisposeWith(disposables);
+
            var configTypeBindings = new SerialDisposable().DisposeWith(disposables);

            this.Bind(ViewModel, vm => vm.CoreType, v => v.cmbCoreType.SelectedValue).DisposeWith(disposables);
@@ -188,11 +193,6 @@ public partial class AddServerWindow : WindowBase<AddServerViewModel>
            this.BindCommand(ViewModel, vm => vm.FetchCertCmd, v => v.btnFetchCert).DisposeWith(disposables);
            this.BindCommand(ViewModel, vm => vm.FetchCertChainCmd, v => v.btnFetchCertChain).DisposeWith(disposables);
            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
-
-            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
-                .WhereNotNull()
-                .Subscribe(InitializeData)
-                .DisposeWith(disposables);
        });

    }
--- a/v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml
+++ b/v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml
@@ -42,7 +42,7 @@
                        x:Name="gridBasicDNSSettings"
                        Margin="{StaticResource Margin8}"
                        ColumnDefinitions="Auto,Auto,*"
-                        RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto">
+                        RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto">

                        <TextBlock
                            x:Name="txtBasicDNSSettingsInvalid"
@@ -167,28 +167,71 @@
                            Grid.Column="0"
                            Margin="{StaticResource Margin4}"
                            VerticalAlignment="Center"
-                            Text="{x:Static resx:ResUI.TbParallelQuery}" />
-                        <ToggleSwitch
-                            x:Name="togParallelQuery"
+                            Text="{x:Static resx:ResUI.TbProxyDialResolveStrategy}" />
+                        <ComboBox
+                            x:Name="cmbProxyDialDNSStrategy"
                            Grid.Row="7"
                            Grid.Column="1"
+                            Width="200"
                            Margin="{StaticResource Margin4}"
-                            HorizontalAlignment="Left"
-                            VerticalAlignment="Center" />
+                            VerticalAlignment="Center"
+                            PlaceholderText="Default" />
+                        <TextBlock
+                            Grid.Row="7"
+                            Grid.Column="2"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbProxyDialResolveStrategyTip}"
+                            TextWrapping="Wrap" />

                        <TextBlock
                            Grid.Row="8"
                            Grid.Column="0"
                            Margin="{StaticResource Margin4}"
                            VerticalAlignment="Center"
-                            Text="{x:Static resx:ResUI.TbServeStale}" />
+                            Text="{x:Static resx:ResUI.TbParallelQuery}" />
                        <ToggleSwitch
-                            x:Name="togServeStale"
+                            x:Name="togParallelQuery"
                            Grid.Row="8"
                            Grid.Column="1"
                            Margin="{StaticResource Margin4}"
                            HorizontalAlignment="Left"
                            VerticalAlignment="Center" />
+
+                        <TextBlock
+                            Grid.Row="9"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbServeStale}" />
+                        <ToggleSwitch
+                            x:Name="togServeStale"
+                            Grid.Row="9"
+                            Grid.Column="1"
+                            Margin="{StaticResource Margin4}"
+                            HorizontalAlignment="Left"
+                            VerticalAlignment="Center" />
+
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbEnableHappyEyeballs}" />
+                        <ToggleSwitch
+                            x:Name="togEnableHappyEyeballs"
+                            Grid.Row="10"
+                            Grid.Column="1"
+                            Margin="{StaticResource Margin4}"
+                            HorizontalAlignment="Left"
+                            VerticalAlignment="Center" />
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="2"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbEnableHappyEyeballsTip}"
+                            TextWrapping="Wrap" />
                    </Grid>
                </ScrollViewer>
            </TabItem>
@@ -243,13 +286,24 @@
                            Margin="{StaticResource Margin4}"
                            VerticalAlignment="Center"
                            Text="{x:Static resx:ResUI.TbFakeIP}" />
-                        <ToggleSwitch
-                            x:Name="togFakeIP"
+                        <Grid
                            Grid.Row="3"
                            Grid.Column="1"
-                            Margin="{StaticResource Margin4}"
-                            HorizontalAlignment="Left"
-                            VerticalAlignment="Center" />
+                            ColumnDefinitions="Auto,*">
+                            <ToggleSwitch
+                                x:Name="togFakeIP"
+                                Grid.Column="0"
+                                Margin="{StaticResource Margin4}"
+                                HorizontalAlignment="Left"
+                                VerticalAlignment="Center" />
+                            <ComboBox
+                                x:Name="cmbFakeIPRange"
+                                Grid.Column="1"
+                                Margin="{StaticResource Margin4}"
+                                HorizontalAlignment="Stretch"
+                                VerticalAlignment="Center"
+                                IsEditable="True" />
+                        </Grid>
                        <TextBlock
                            Grid.Row="3"
                            Grid.Column="2"
@@ -318,8 +372,8 @@
                            VerticalAlignment="Stretch"
                            BorderThickness="1"
                            Classes="TextArea"
-                            TextWrapping="Wrap"
-                            PlaceholderText="{x:Static resx:ResUI.TbDNSHostsConfig}" />
+                            PlaceholderText="{x:Static resx:ResUI.TbDNSHostsConfig}"
+                            TextWrapping="Wrap" />
                    </Grid>
                </ScrollViewer>
            </TabItem>
--- a/v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml.cs
@@ -16,9 +16,11 @@ public partial class DNSSettingWindow : WindowBase<DNSSettingViewModel>

        cmbDirectDNSStrategy.ItemsSource = Global.DomainStrategy;
        cmbRemoteDNSStrategy.ItemsSource = Global.DomainStrategy;
+        cmbProxyDialDNSStrategy.ItemsSource = Global.DomainStrategy;
        cmbDirectDNS.ItemsSource = Global.DomainDirectDNSAddress;
        cmbRemoteDNS.ItemsSource = Global.DomainRemoteDNSAddress;
        cmbBootstrapDNS.ItemsSource = Global.DomainPureIPDNSAddress;
+        cmbFakeIPRange.ItemsSource = Global.FakeIPRanges;
        cmbDirectExpectedIPs.ItemsSource = Global.ExpectedIPs;

        cmbdomainStrategy4FreedomCompatible.ItemsSource = Global.DomainStrategy;
@@ -31,16 +33,19 @@ public partial class DNSSettingWindow : WindowBase<DNSSettingViewModel>
            this.Bind(ViewModel, vm => vm.UseSystemHosts, v => v.togUseSystemHosts.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.AddCommonHosts, v => v.togAddCommonHosts.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.FakeIP, v => v.togFakeIP.IsChecked).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FakeIPRange, v => v.cmbFakeIPRange.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.BlockBindingQuery, v => v.togBlockBindingQuery.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.DirectDNS, v => v.cmbDirectDNS.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.RemoteDNS, v => v.cmbRemoteDNS.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.BootstrapDNS, v => v.cmbBootstrapDNS.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.Strategy4Freedom, v => v.cmbDirectDNSStrategy.SelectedItem).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.Strategy4Proxy, v => v.cmbRemoteDNSStrategy.SelectedItem).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.Strategy4ProxyDial, v => v.cmbProxyDialDNSStrategy.SelectedItem).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.Hosts, v => v.txtHosts.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.DirectExpectedIPs, v => v.cmbDirectExpectedIPs.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.ParallelQuery, v => v.togParallelQuery.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.ServeStale, v => v.togServeStale.IsChecked).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.EnableHappyEyeballs, v => v.togEnableHappyEyeballs.IsChecked).DisposeWith(disposables);

            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);

--- a/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml
+++ b/v2rayN/v2rayN.Desktop/Views/MainWindow.axaml
@@ -18,10 +18,7 @@
    ShowInTaskbar="True"
    WindowStartupLocation="CenterScreen"
    mc:Ignorable="d">
-    <dialogHost:DialogHost
-        Background="Gray"
-        CloseOnClickAway="True"
-        DisableOpeningAnimation="True">
+    <dialogHost:DialogHost CloseOnClickAway="True" DisableOpeningAnimation="True">
        <DockPanel>
            <DockPanel Margin="{StaticResource Margin8}" DockPanel.Dock="Top">
                <ContentControl x:Name="conTheme" DockPanel.Dock="Right" />
--- a/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml
+++ b/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml
@@ -347,7 +347,7 @@
                                                VerticalAlignment="Center"
                                                Text="{x:Static resx:ResUI.TbSettingsFragmentLength}" />
                                            <TextBox
-                                                x:Name="txtFragmentLength"
+                                                x:Name="txtFragmentLengths"
                                                Grid.Row="1"
                                                Grid.Column="1"
                                                Width="120"
@@ -369,7 +369,7 @@
                                                VerticalAlignment="Center"
                                                Text="{x:Static resx:ResUI.TbSettingsFragmentInterval}" />
                                            <TextBox
-                                                x:Name="txtFragmentInterval"
+                                                x:Name="txtFragmentDelays"
                                                Grid.Row="2"
                                                Grid.Column="1"
                                                Width="120"
@@ -961,7 +961,7 @@
                        Margin="{StaticResource Margin4}"
                        ColumnDefinitions="Auto,Auto,Auto"
                        DockPanel.Dock="Top"
-                        RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto">
+                        RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto">

                        <TextBlock
                            Grid.Row="2"
@@ -1087,6 +1087,34 @@
                            VerticalAlignment="Center"
                            Text="{x:Static resx:ResUI.TbRouteExcludeAddressTip}"
                            TextWrapping="Wrap" />
+
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbIpv4Address}" />
+                        <ComboBox
+                            x:Name="cmbIpv4Address"
+                            Grid.Row="10"
+                            Grid.Column="1"
+                            Width="200"
+                            Margin="{StaticResource Margin4}"
+                            HorizontalAlignment="Left" />
+
+                        <TextBlock
+                            Grid.Row="11"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin4}"
+                            VerticalAlignment="Center"
+                            Text="{x:Static resx:ResUI.TbIpv6Address}" />
+                        <ComboBox
+                            x:Name="cmbIpv6Address"
+                            Grid.Row="11"
+                            Grid.Column="1"
+                            Width="200"
+                            Margin="{StaticResource Margin4}"
+                            HorizontalAlignment="Left" />
                    </Grid>
                </ScrollViewer>
            </TabItem>
--- a/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs
@@ -33,6 +33,8 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
        cmbMtu.ItemsSource = Global.TunMtus;
        cmbStack.ItemsSource = Global.TunStacks;
        cmbIcmpRoutingPolicy.ItemsSource = Global.TunIcmpRoutingPolicies;
+        cmbIpv4Address.ItemsSource = Global.TunIPv4Address;
+        cmbIpv6Address.ItemsSource = Global.TunIPv6Address;
        cmbFragmentPackets.ItemsSource = Global.FragmentPacketsOptions;

        cmbCoreType1.ItemsSource = Global.CoreTypes;
@@ -86,8 +88,8 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
            this.Bind(ViewModel, vm => vm.EnableFragment, v => v.togenableFragment.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.EnableFinalFragment, v => v.togenableFinalFragment.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.FragmentPackets, v => v.cmbFragmentPackets.SelectedItem).DisposeWith(disposables);
-            this.Bind(ViewModel, vm => vm.FragmentLength, v => v.txtFragmentLength.Text).DisposeWith(disposables);
-            this.Bind(ViewModel, vm => vm.FragmentInterval, v => v.txtFragmentInterval.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FragmentLengths, v => v.txtFragmentLengths.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FragmentDelays, v => v.txtFragmentDelays.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.FragmentMaxSplit, v => v.txtFragmentMaxSplit.Text).DisposeWith(disposables);

            this.Bind(ViewModel, vm => vm.AutoRun, v => v.togAutoRun.IsChecked).DisposeWith(disposables);
@@ -129,6 +131,8 @@ public partial class OptionSettingWindow : WindowBase<OptionSettingViewModel>
            this.Bind(ViewModel, vm => vm.TunIcmpRouting, v => v.cmbIcmpRoutingPolicy.SelectedValue).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.TunEnableLegacyProtect, v => v.togEnableLegacyProtect.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.TunRouteExcludeAddress, v => v.txtRouteExcludeAddress.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.TunIPv4Address, v => v.cmbIpv4Address.SelectedValue).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.TunIPv6Address, v => v.cmbIpv6Address.SelectedValue).DisposeWith(disposables);

            this.Bind(ViewModel, vm => vm.CoreType1, v => v.cmbCoreType1.SelectedValue).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.CoreType2, v => v.cmbCoreType2.SelectedValue).DisposeWith(disposables);
--- a/v2rayN/v2rayN.Desktop/Views/RoutingRuleDetailsWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/RoutingRuleDetailsWindow.axaml.cs
@@ -21,6 +21,11 @@ public partial class RoutingRuleDetailsWindow : WindowBase<RoutingRuleDetailsVie

        this.WhenActivated(disposables =>
        {
+            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
+                .WhereNotNull()
+                .Subscribe(InitializeData)
+                .DisposeWith(disposables);
+
            this.Bind(ViewModel, vm => vm.SelectedSource.OutboundTag, v => v.cmbOutboundTag.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.SelectedSource.Remarks, v => v.txtRemarks.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.SelectedSource.OutboundTag, v => v.cmbOutboundTag.Text).DisposeWith(disposables);
@@ -35,11 +40,6 @@ public partial class RoutingRuleDetailsWindow : WindowBase<RoutingRuleDetailsVie

            this.BindCommand(ViewModel, vm => vm.SelectProfileCmd, v => v.btnSelectProfile).DisposeWith(disposables);
            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
-
-            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
-                .WhereNotNull()
-                .Subscribe(InitializeData)
-                .DisposeWith(disposables);
        });
    }

--- a/v2rayN/v2rayN.Desktop/Views/SubSettingWindow.axaml
+++ b/v2rayN/v2rayN.Desktop/Views/SubSettingWindow.axaml
@@ -17,7 +17,6 @@
    WindowStartupLocation="CenterScreen"
    mc:Ignorable="d">
    <dialogHost:DialogHost
-        Background="Gray"
        CloseOnClickAway="True"
        DisableOpeningAnimation="True"
        Identifier="dialogHostSub">
--- a/v2rayN/v2rayN/Views/AddGroupServerWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/AddGroupServerWindow.xaml.cs
@@ -25,6 +25,11 @@ public partial class AddGroupServerWindow

        this.WhenActivated(disposables =>
        {
+            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
+                .WhereNotNull()
+                .Subscribe(InitializeData)
+                .DisposeWith(disposables);
+
            this.Bind(ViewModel, vm => vm.SelectedSource.Remarks, v => v.txtRemarks.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.CoreType, v => v.cmbCoreType.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.PolicyGroupType, v => v.cmbPolicyGroupType.Text).DisposeWith(disposables);
@@ -45,11 +50,6 @@ public partial class AddGroupServerWindow
            this.BindCommand(ViewModel, vm => vm.MoveBottomCmd, v => v.menuMoveBottom).DisposeWith(disposables);

            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
-
-            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
-                .WhereNotNull()
-                .Subscribe(InitializeData)
-                .DisposeWith(disposables);
        });
        WindowsUtils.SetDarkBorder(this, AppManager.Instance.Config.UiItem.CurrentTheme);
    }
--- a/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
@@ -36,6 +36,11 @@ public partial class AddServerWindow

        this.WhenActivated(disposables =>
        {
+            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
+                .WhereNotNull()
+                .Subscribe(InitializeData)
+                .DisposeWith(disposables);
+
            var configTypeBindings = new SerialDisposable().DisposeWith(disposables);

            this.Bind(ViewModel, vm => vm.CoreType, v => v.cmbCoreType.Text).DisposeWith(disposables);
@@ -186,11 +191,6 @@ public partial class AddServerWindow
            this.BindCommand(ViewModel, vm => vm.FetchCertCmd, v => v.btnFetchCert).DisposeWith(disposables);
            this.BindCommand(ViewModel, vm => vm.FetchCertChainCmd, v => v.btnFetchCertChain).DisposeWith(disposables);
            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
-
-            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
-                .WhereNotNull()
-                .Subscribe(InitializeData)
-                .DisposeWith(disposables);
        });

        WindowsUtils.SetDarkBorder(this, AppManager.Instance.Config.UiItem.CurrentTheme);
--- a/v2rayN/v2rayN/Views/DNSSettingWindow.xaml
+++ b/v2rayN/v2rayN/Views/DNSSettingWindow.xaml
@@ -52,6 +52,8 @@
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
+                            <RowDefinition Height="Auto" />
+                            <RowDefinition Height="Auto" />
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto" />
@@ -195,13 +197,23 @@
                            Margin="{StaticResource Margin8}"
                            VerticalAlignment="Center"
                            Style="{StaticResource ToolbarTextBlock}"
-                            Text="{x:Static resx:ResUI.TbParallelQuery}" />
-                        <ToggleButton
-                            x:Name="togParallelQuery"
+                            Text="{x:Static resx:ResUI.TbProxyDialResolveStrategy}" />
+                        <ComboBox
+                            x:Name="cmbProxyDialDNSStrategy"
                            Grid.Row="7"
                            Grid.Column="1"
+                            Width="200"
                            Margin="{StaticResource Margin8}"
-                            HorizontalAlignment="Left" />
+                            materialDesign:HintAssist.Hint="Default"
+                            Style="{StaticResource DefComboBox}" />
+                        <TextBlock
+                            Grid.Row="7"
+                            Grid.Column="2"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbProxyDialResolveStrategyTip}"
+                            TextWrapping="Wrap" />

                        <TextBlock
                            Grid.Row="8"
@@ -209,13 +221,49 @@
                            Margin="{StaticResource Margin8}"
                            VerticalAlignment="Center"
                            Style="{StaticResource ToolbarTextBlock}"
-                            Text="{x:Static resx:ResUI.TbServeStale}" />
+                            Text="{x:Static resx:ResUI.TbParallelQuery}" />
                        <ToggleButton
-                            x:Name="togServeStale"
+                            x:Name="togParallelQuery"
                            Grid.Row="8"
                            Grid.Column="1"
                            Margin="{StaticResource Margin8}"
                            HorizontalAlignment="Left" />
+
+                        <TextBlock
+                            Grid.Row="9"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbServeStale}" />
+                        <ToggleButton
+                            x:Name="togServeStale"
+                            Grid.Row="9"
+                            Grid.Column="1"
+                            Margin="{StaticResource Margin8}"
+                            HorizontalAlignment="Left" />
+
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbEnableHappyEyeballs}" />
+                        <ToggleButton
+                            x:Name="togEnableHappyEyeballs"
+                            Grid.Row="10"
+                            Grid.Column="1"
+                            Margin="{StaticResource Margin8}"
+                            HorizontalAlignment="Left" />
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="2"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbEnableHappyEyeballsTip}"
+                            TextWrapping="Wrap" />
                    </Grid>
                </ScrollViewer>
            </TabItem>
@@ -283,12 +331,25 @@
                            VerticalAlignment="Center"
                            Style="{StaticResource ToolbarTextBlock}"
                            Text="{x:Static resx:ResUI.TbFakeIP}" />
-                        <ToggleButton
-                            x:Name="togFakeIP"
-                            Grid.Row="3"
-                            Grid.Column="1"
-                            Margin="{StaticResource Margin8}"
-                            HorizontalAlignment="Left" />
+                        <Grid Grid.Row="3" Grid.Column="1">
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="Auto" />
+                                <ColumnDefinition Width="*" />
+                            </Grid.ColumnDefinitions>
+
+                            <ToggleButton
+                                x:Name="togFakeIP"
+                                Grid.Column="0"
+                                Margin="{StaticResource Margin8}"
+                                HorizontalAlignment="Left" />
+                            <ComboBox
+                                x:Name="cmbFakeIPRange"
+                                Grid.Column="1"
+                                Margin="{StaticResource Margin8}"
+                                HorizontalAlignment="Stretch"
+                                IsEditable="True"
+                                Style="{StaticResource DefComboBox}" />
+                        </Grid>
                        <TextBlock
                            Grid.Row="3"
                            Grid.Column="2"
--- a/v2rayN/v2rayN/Views/DNSSettingWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/DNSSettingWindow.xaml.cs
@@ -12,9 +12,11 @@ public partial class DNSSettingWindow

        cmbDirectDNSStrategy.ItemsSource = Global.DomainStrategy;
        cmbRemoteDNSStrategy.ItemsSource = Global.DomainStrategy;
+        cmbProxyDialDNSStrategy.ItemsSource = Global.DomainStrategy;
        cmbDirectDNS.ItemsSource = Global.DomainDirectDNSAddress;
        cmbRemoteDNS.ItemsSource = Global.DomainRemoteDNSAddress;
        cmbBootstrapDNS.ItemsSource = Global.DomainPureIPDNSAddress;
+        cmbFakeIPRange.ItemsSource = Global.FakeIPRanges;
        cmbDirectExpectedIPs.ItemsSource = Global.ExpectedIPs;

        cmbdomainStrategy4FreedomCompatible.ItemsSource = Global.DomainStrategy;
@@ -27,16 +29,19 @@ public partial class DNSSettingWindow
            this.Bind(ViewModel, vm => vm.UseSystemHosts, v => v.togUseSystemHosts.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.AddCommonHosts, v => v.togAddCommonHosts.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.FakeIP, v => v.togFakeIP.IsChecked).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FakeIPRange, v => v.cmbFakeIPRange.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.BlockBindingQuery, v => v.togBlockBindingQuery.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.DirectDNS, v => v.cmbDirectDNS.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.RemoteDNS, v => v.cmbRemoteDNS.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.BootstrapDNS, v => v.cmbBootstrapDNS.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.Strategy4Freedom, v => v.cmbDirectDNSStrategy.SelectedItem).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.Strategy4Proxy, v => v.cmbRemoteDNSStrategy.SelectedItem).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.Strategy4ProxyDial, v => v.cmbProxyDialDNSStrategy.SelectedItem).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.Hosts, v => v.txtHosts.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.DirectExpectedIPs, v => v.cmbDirectExpectedIPs.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.ParallelQuery, v => v.togParallelQuery.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.ServeStale, v => v.togServeStale.IsChecked).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.EnableHappyEyeballs, v => v.togEnableHappyEyeballs.IsChecked).DisposeWith(disposables);

            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);

--- a/v2rayN/v2rayN/Views/OptionSettingWindow.xaml
+++ b/v2rayN/v2rayN/Views/OptionSettingWindow.xaml
@@ -419,7 +419,7 @@
                                        Text="{x:Static resx:ResUI.TbSettingsFragmentLength}"
                                        TextWrapping="Wrap" />
                                    <TextBox
-                                        x:Name="txtFragmentLength"
+                                        x:Name="txtFragmentLengths"
                                        Grid.Row="1"
                                        Grid.Column="1"
                                        Width="200"
@@ -437,7 +437,7 @@
                                        Text="{x:Static resx:ResUI.TbSettingsFragmentInterval}"
                                        TextWrapping="Wrap" />
                                    <TextBox
-                                        x:Name="txtFragmentInterval"
+                                        x:Name="txtFragmentDelays"
                                        Grid.Row="2"
                                        Grid.Column="1"
                                        Width="200"
@@ -1198,6 +1198,8 @@
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
+                            <RowDefinition Height="Auto" />
+                            <RowDefinition Height="Auto" />
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto" />
@@ -1346,6 +1348,39 @@
                            Style="{StaticResource ToolbarTextBlock}"
                            Text="{x:Static resx:ResUI.TbRouteExcludeAddressTip}"
                            TextWrapping="Wrap" />
+
+                        <TextBlock
+                            Grid.Row="10"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbIpv4Address}" />
+                        <ComboBox
+                            x:Name="cmbIpv4Address"
+                            Grid.Row="10"
+                            Grid.Column="1"
+                            Width="200"
+                            Margin="{StaticResource Margin8}"
+                            HorizontalAlignment="Left"
+                            Style="{StaticResource DefComboBox}" />
+
+
+                        <TextBlock
+                            Grid.Row="11"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbIpv6Address}" />
+                        <ComboBox
+                            x:Name="cmbIpv6Address"
+                            Grid.Row="11"
+                            Grid.Column="1"
+                            Width="200"
+                            Margin="{StaticResource Margin8}"
+                            HorizontalAlignment="Left"
+                            Style="{StaticResource DefComboBox}" />
                    </Grid>
                </ScrollViewer>
            </TabItem>
--- a/v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs
@@ -29,6 +29,8 @@ public partial class OptionSettingWindow
        cmbMtu.ItemsSource = Global.TunMtus;
        cmbStack.ItemsSource = Global.TunStacks;
        cmbIcmpRoutingPolicy.ItemsSource = Global.TunIcmpRoutingPolicies;
+        cmbIpv4Address.ItemsSource = Global.TunIPv4Address;
+        cmbIpv6Address.ItemsSource = Global.TunIPv6Address;
        cmbFragmentPackets.ItemsSource = Global.FragmentPacketsOptions;

        cmbCoreType1.ItemsSource = Global.CoreTypes;
@@ -82,18 +84,10 @@ public partial class OptionSettingWindow
            this.Bind(ViewModel, vm => vm.EnableFragment, v => v.togenableFragment.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.EnableFinalFragment, v => v.togenableFinalFragment.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.FragmentPackets, v => v.cmbFragmentPackets.Text).DisposeWith(disposables);
-            this.Bind(ViewModel, vm => vm.FragmentLength, v => v.txtFragmentLength.Text).DisposeWith(disposables);
-            this.Bind(ViewModel, vm => vm.FragmentInterval, v => v.txtFragmentInterval.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FragmentLengths, v => v.txtFragmentLengths.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.FragmentDelays, v => v.txtFragmentDelays.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.FragmentMaxSplit, v => v.txtFragmentMaxSplit.Text).DisposeWith(disposables);

-            //this.Bind(ViewModel, vm => vm.Kcpmtu, v => v.txtKcpmtu.Text).DisposeWith(disposables);
-            //this.Bind(ViewModel, vm => vm.Kcptti, v => v.txtKcptti.Text).DisposeWith(disposables);
-            //this.Bind(ViewModel, vm => vm.KcpuplinkCapacity, v => v.txtKcpuplinkCapacity.Text).DisposeWith(disposables);
-            //this.Bind(ViewModel, vm => vm.KcpdownlinkCapacity, v => v.txtKcpdownlinkCapacity.Text).DisposeWith(disposables);
-            //this.Bind(ViewModel, vm => vm.KcpreadBufferSize, v => v.txtKcpreadBufferSize.Text).DisposeWith(disposables);
-            //this.Bind(ViewModel, vm => vm.KcpwriteBufferSize, v => v.txtKcpwriteBufferSize.Text).DisposeWith(disposables);
-            //this.Bind(ViewModel, vm => vm.Kcpcongestion, v => v.togKcpcongestion.IsChecked).DisposeWith(disposables);
-
            this.Bind(ViewModel, vm => vm.AutoRun, v => v.togAutoRun.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.EnableStatistics, v => v.togEnableStatistics.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.DisplayRealTimeSpeed, v => v.togDisplayRealTimeSpeed.IsChecked).DisposeWith(disposables);
@@ -132,6 +126,8 @@ public partial class OptionSettingWindow
            this.Bind(ViewModel, vm => vm.TunIcmpRouting, v => v.cmbIcmpRoutingPolicy.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.TunEnableLegacyProtect, v => v.togEnableLegacyProtect.IsChecked).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.TunRouteExcludeAddress, v => v.txtRouteExcludeAddress.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.TunIPv4Address, v => v.cmbIpv4Address.Text).DisposeWith(disposables);
+            this.Bind(ViewModel, vm => vm.TunIPv6Address, v => v.cmbIpv6Address.Text).DisposeWith(disposables);

            this.Bind(ViewModel, vm => vm.CoreType1, v => v.cmbCoreType1.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.CoreType2, v => v.cmbCoreType2.Text).DisposeWith(disposables);
--- a/v2rayN/v2rayN/Views/RoutingRuleDetailsWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/RoutingRuleDetailsWindow.xaml.cs
@@ -18,6 +18,11 @@ public partial class RoutingRuleDetailsWindow

        this.WhenActivated(disposables =>
        {
+            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
+                .WhereNotNull()
+                .Subscribe(InitializeData)
+                .DisposeWith(disposables);
+
            this.Bind(ViewModel, vm => vm.SelectedSource.Remarks, v => v.txtRemarks.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.SelectedSource.OutboundTag, v => v.cmbOutboundTag.Text).DisposeWith(disposables);
            this.Bind(ViewModel, vm => vm.SelectedSource.Port, v => v.txtPort.Text).DisposeWith(disposables);
@@ -31,11 +36,6 @@ public partial class RoutingRuleDetailsWindow

            this.BindCommand(ViewModel, vm => vm.SelectProfileCmd, v => v.btnSelectProfile).DisposeWith(disposables);
            this.BindCommand(ViewModel, vm => vm.SaveCmd, v => v.btnSave).DisposeWith(disposables);
-
-            this.WhenAnyValue(v => v.ViewModel.SelectedSource)
-                .WhereNotNull()
-                .Subscribe(InitializeData)
-                .DisposeWith(disposables);
        });
        WindowsUtils.SetDarkBorder(this, AppManager.Instance.Config.UiItem.CurrentTheme);
    }
--- a/v2rayN/v2rayN/Views/StatusBarView.xaml.cs
+++ b/v2rayN/v2rayN/Views/StatusBarView.xaml.cs
@@ -75,6 +75,8 @@ public partial class StatusBarView
                interaction.SetOutput(Unit.Default);
            }).DisposeWith(disposables);
        });
+
+        _ = RefreshIcon();
    }

    private async Task RefreshIcon()
Author	SHA1	Message	Date
2dust	92c3df45ae	up 7.24.3	2026-07-26 21:25:31 +08:00
hyjhyj111	ee7e21268a	Fix TUN core elevation: decide sudo from the config context snapshot (#9830 ) CoreManager.RunProcess decided sudo elevation from the live mutable _config.TunModeItem.EnableTun while the launched config was generated from the immutable CoreConfigContext snapshot. If the TUN state changed while a reload was in flight, a core whose config contains a TUN inbound could launch without elevation and die within the 100ms health check ("Failed to run core"), with no stderr shown. The elevation decision now follows context.IsTunEnabled / preContext.IsTunEnabled, so the generated config and the launch mode always agree. With legacy TUN protect, the sing-box pre-core hosting TUN is elevated and the main core no longer runs as root needlessly.	2026-07-26 21:24:11 +08:00
2dust	dc216c2b02	Rename TunIp to TunIP	2026-07-26 21:07:36 +08:00
2dust	beffa919d3	Use /126 prefixes for TUN IPv6 addresses https://github.com/2dust/v2rayN/pull/9830	2026-07-26 20:46:32 +08:00
2dust	a654826231	Enable legacy TUN protect by default	2026-07-26 20:46:01 +08:00
2dust	b01476d147	Fix tun inbound dns setting	2026-07-26 10:29:35 +08:00
2dust	cf8dd45abe	up 7.24.2	2026-07-24 16:57:53 +08:00
2dust	9bba6f53f8	Update Directory.Packages.props	2026-07-24 16:57:22 +08:00
2dust	cd77f1d882	Code clean	2026-07-24 16:57:19 +08:00
mymyme	0427037638	fix: sanitize system proxy exceptions to avoid macOS ExceptionsList b… (#9815 ) * fix: sanitize system proxy exceptions to avoid macOS ExceptionsList being dropped On macOS/Linux the exception list is comma-separated and passed to networksetup. It was only stripped of spaces, so a stray newline or a trailing comma left a malformed/empty entry. macOS configd then silently rejects the whole ExceptionsList (scutil --proxy shows no ExceptionsList), so the bypass never takes effect. Split on ',' with TrimEntries + RemoveEmptyEntries and rejoin; behavior-preserving for well-formed input. Windows path (';') is left unchanged. Note: not built locally (no .NET SDK on hand); relying on CI. * Update SysProxyHandler.cs --------- Co-authored-by: 2dust <31833384+2dust@users.noreply.github.com>	2026-07-24 14:12:10 +08:00
2dust	e749b81ecf	Add configurable TUN IPv4/IPv6 addresses https://github.com/2dust/v2rayN/issues/9810	2026-07-24 10:13:08 +08:00
JieXu	fd2c942231	Update package-rhel-loong.sh (#9792 ) * Update package-rhel-loong.sh * Update package-debian-loong.sh * Update Directory.Packages.props	2026-07-20 09:30:52 +08:00
tt2563	fa42eb670f	Update ResUI.zh-Hant.resx (#9783 ) Update Traditional Chinese translation	2026-07-19 09:54:45 +08:00
DHR60	0d42996573	Fix ui (#9789 )	2026-07-19 09:54:26 +08:00
DHR60	a37772f12b	Fakeip (#9786 ) * Add fakeip range * Xray fakedns	2026-07-18 17:47:14 +08:00
DHR60	531e0e9443	Fix (#9787 )	2026-07-18 17:45:42 +08:00
2dust	984c77f0c4	up 7.24.1	2026-07-17 09:26:10 +08:00
2dust	b5e0be47a5	Code clean	2026-07-17 09:25:13 +08:00
dependabot[bot]	6df0e6de1b	Bump actions/setup-dotnet from 5.4.0 to 6.0.0 (#9778 ) Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 5.4.0 to 6.0.0. - [Release notes](https://github.com/actions/setup-dotnet/releases) - [Commits](https://github.com/actions/setup-dotnet/compare/v5.4.0...v6.0.0) --- updated-dependencies: - dependency-name: actions/setup-dotnet dependency-version: 6.0.0 dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2026-07-17 09:13:28 +08:00
autorepobot	2b5328665f	Update package-rhel.sh (#9780 ) * Update package-rhel.sh * Update package-rhel-riscv.sh * Update package-rhel-loong.sh * Update package-debian.sh * Update package-debian-riscv.sh * Update package-debian-loong.sh * Update package-debian-riscv.sh * Update package-rhel-riscv.sh	2026-07-17 09:13:19 +08:00
DHR60	4584ecc5c9	Add HappyEyeballs (#9772 ) * Add HappyEyeballs * Clean up the code * Fix	2026-07-17 09:12:50 +08:00
DHR60	d9dc2d7cf5	Fix (#9776 )	2026-07-17 09:11:28 +08:00
DHR60	36f8565b7a	Update cert (#9773 )	2026-07-17 08:59:30 +08:00
DHR60	f55d8b2565	Sync xray (#9708 ) * Sync xray fragment * Sync xray freedom domainStrategy * Add Strategy4ProxyDial	2026-07-16 18:55:06 +08:00
DHR60	09ea4890a7	Fix (#9771 )	2026-07-16 17:37:17 +08:00
DHR60	5cc2aaba13	Fix (#9769 )	2026-07-16 17:37:04 +08:00
DHR60	b8889bad86	Fix (#9768 )	2026-07-16 17:36:51 +08:00