And in fact, it shouldn't use the network at all :) Well, that's not neccesarily. It's not that uncommon for a network game to use TCP code even for single player games. That's exactly what's loopback is for. It's easier for a developer to reuse network code for single player game (that has server-...

Thank you!
That was it. I had `hostname` set in /etc/hosts to non loopback value.

But still game should fallback to 127.0.0.1 if net is down, not use `hostname` value.
Anyway, it works. Thanks.

All addresses from all interfaces removed, all interface to down state (ip l s down eth0): # ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever prefer...

I've checked Unnoficial FAQ, Defcon main page FAQ and both claim that you can play LAN/offline games without any internet access, that your key can be algorithmically checked offline for that. Well, for Linux it doesn't work. I click "new game" and only get chat window. I just checked wind...

This is sticky, but the FAQ in question gives beautiful 404. Anyone happens to have a copy?