http://bugs.winehq.org/show_bug.cgi?id=13348
--- Comment #1 from dan_500@web.de 2008-05-22 09:49:03 --- You need (amongst others) to modify /etc/hosts to play multiplayer with DirectPlay. You need to set your hostname to your local ip adress instead of the loopback address. You should come up with a good solution to this that doesn't require people changing their /etc/hosts file. It should work "out-of-the-box". Please!