Can't see my buddy on my own AdhocServer

[Zeramhfu]

So basically getting straight to the point.
I have set up an AdHocServer using Linux since i am a HUGE tunngle/hamachi hater as it has caused me a LOT of problems in the past, it works pretty okay i guess, i can see my friend and i both connecting to the server in the console, but we can't see each other in the gathering hall in MHFU, we've tried several versions of PPSSPP, always using the same settings.
We are running the EU version of mhfu if that makes any difference.
is there any way to get it to work without using hamachi and such?