WarMUX was abandoned!There has been no work on this game for quite some time or it was left in an unfinished state and there is no support by the developer or anyone else.
As you may have noticed, the homepage of WarMUX has been killed since years. There is no alternative anymore, except on the Internet Archive, perhaps. There is only a project page left. I have no idea why and how this happened.
There is a discussion thread on about the missing home page of WarMUX, which contains some results of my research. If you know anything more about the missing WarMUX page, feel free to post on this forum. :-)
The website warmux.org is down but you can use wormux.org instead.
lami, the original author, is unreachable, so nothing can be done for this.
The consequence is that for the past month, no online game can occur. A solution is to run warmux with "-i wormux.org" (without quotes) as option.