What port does the master server use?
The master server listens on port 30710.
Duh, right, I opened a UDP socket to it and expected it to tell me something (dammit, I forgot all about "\xFF\xFF\xFF\xFFgetservers"). After not getting anything, I figured I was using the wrong port. ::)
http://tremulous.net/forum/index.php?topic=9363.msg143723#msg143723
Maybe bookmark it this time.
You can stop helping me now. ;)