I did the same server.cfg as you did at the top..
I get the following while running ./jk2ded +exec server.cfg +map ffa_bespin
Well more like things that could not load I think
couldn't exec jk2mpconfig.cfg
couldn't exec autoexec.cfg
then after a few lines of stuff.. like initgame: blahblah
at the end I get
Couldn't resolve address: masterjk2.ravensoft.com
Hitch warning: 16567 msec frame time
Any fixes or ideas why it does this? I am relearning linux and stuff, and wouldnt mind trying to set up a small dedicated server which sits behind a router.