Not too sure if this is useful or not but couldn't admins of their gameservers just block port 194 to prevent the botnet attacks?
Forgive my Naivete.
And also on the topic of Running server from Linux.
If it's a compatibility issue, how hard would it be to run it in a virtualbox environment firewalled by Linux Native?
More shots in the dark but as I learn more with my own personal studies I come across some nifty info.
ALSO I found something interesting about botnets which I'm sure you're allready familiar with. If not check it out ^_^
Not sure how you can do it on your end but from a physically accessible server you could set custom routing instructions to maybe block some of this **** from happening?
Good Luck guys.