Removing or re-keying a client reconfigured the device in place but left
its TCP and UDP flows standing, and withdrawing a port forward stopped
only new connections. The next client given the same tunnel address
inherited those flows: it could read what outside hosts sent to the
former client and write back into those connections.
After an in-place reconfigure, every stack endpoint and UDP relay
session pinned to an address whose peer was removed or changed is
aborted, and closing a port forward cuts the connections it is relaying.
MHSanaei
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