https://forum.netgate.com/topic/185436/udp-hole-punching-new-datagram-from-same-local-ip-and-port-doesn-t-re-use-external-port
UDP hole punching: new datagram from same local IP and port doesn't re-use external port | Netgate...
Jan 10, 2024 - I am experimenting with UDP hole punching, as illustrated in this diagram on Wikipedia. UDP hole punching works because, as I understand it, the router adds ...
udp hole punchingnewdatagramlocalip