Its up and running Team Gun Game for most of the day today, join if you like and post the results (Laggy, works, doesn't work at all etc.)
Spoiler
To play on it, you need to go to the console, and type "connect xxx.xxx.xxx.xx:xxxxx: (the x's being the IP and port shown above)
I'll leave it running all day, if it works, have fun, if it doesn't... well that sucks.