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bartbes wrote: ↑Sat Feb 25, 2017 5:37 pm Though it does presume the client knows the server's public ip (and port?), which seems a bit weird.

This is how Minecraft's mobile version did it for a long time (I think they got a server list after Microsoft buyout). They didn't use holepunching, the host had to forward a port, but it looks like the pwnat trick would solve that.