How to fix problems related to the Local Aera Network option?

If you try to play using the Local Area Network option, and do not see a game hosted from your machine on another or vice versa, and you are in the same subnet, this is likely caused by not having a default gateway. The game relies on sending UDP packets to the broadcast address and Linux will not send them unless there is a default gateway or another rule to handle them. To fix it, there are two methods:

Add a default gateway.
- OR -
Route 255. 255. 255. 255 to your local network.

See Wine Traffic #62 for another description of the issue. This is not considered a bug.