iptables -t nat -A DOCKER ! -i <container-bridge> -p udp --match multiport --dports 1024:65535 -j DNAT --to-destination <container-internal-ip>
https://github.com/team-brh/game-servers
https://blog.chionlab.moe/2018/02/09/full-cone-nat-with-linux/
https://blog.csdn.net/jk110333/article/details/8229828
https://github.com/automation-stack/nat-discovery
https://pypi.org/project/pystun/