http://bugs.winehq.org/show_bug.cgi?id=20041
--- Comment #11 from Christian Widmer shadow@umbrox.de 2010-09-09 10:06:42 CDT --- Of course I meant Juan. Sorry for spelling your name wrong.
(In reply to comment #10)
What is also quite strange is that - at least for Dungeon Siege - someone wrote a test for wine 1.1.37 running on Debian Squeeze where he claims the multiplayer to work. Therefore I tested this wine version but it did not work for me on Ubuntu 10.04 (64-bit). Further testing then brought me to the same result as Jean. It is maybe also worth noting that both games use Direct Play.