Thread:Deathstalker666/@comment-1496755-20150520064122/@comment-3547390-20150520135433

Raadec was able to do it with WinQuake, so I doubt that is the problem.

The main thing will be having you set up Tunngle, which should make it emulated as a LAN game. Quake has some instabilities with internet these days due to the way our routers are nowadays. Basically we would either need to get a third party port (which is my least favorite option) or we find an alternative (currently the method mentioned).

You should try installing the program over the course of this week, it tends to be rather unstable in installation.