NatTypeTester Channel Status CI Stun.Net RFC supports RFC 3489 RFC 5389 RFC 5769 RFC 5780 RFC 7350 RFC 7443 RFC 7635 RFC 8489 Internet Protocol IPv4 IPv6 Transmission Protocol UDP TCP TLS-over-TCP DTLS-over-UDP Preview STUN Server Docker docker pull hmbsbige/stunserver docker run -d --restart=always --net=host --name=stunserver hmbsbige/stunserver --mode full --primaryinterface $IP1 --altinterface $IP2