I've forwarded the port, so it seems that maybe my router has an outgoing NAT? I don't know how to check if it does or not.

I've been playing on 0.14.21 build 25327, win64, steam.

I've been unable to host any server whatsoever, which really sucks since I have the best internet out of the group of friends which i play with. (everybody else has lag which makes the game a bit uncomfortable sometimes). I can join their ...