diff --git a/v2rayN/ServiceLib/Handler/ConfigHandler.cs b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
index eeece698..5b220058 100644
--- 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))
diff --git a/v2rayN/ServiceLib/Models/Configs/ConfigItems.cs b/v2rayN/ServiceLib/Models/Configs/ConfigItems.cs
index d1524898..a4d4ced3 100644
--- a/v2rayN/ServiceLib/Models/Configs/ConfigItems.cs
+++ b/v2rayN/ServiceLib/Models/Configs/ConfigItems.cs
@@ -147,7 +147,7 @@ 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; }