Hi,
sorry for the delayed feedback. I have currently problems with my dvd drive aswell, so it took me a while to start a new try.
Now I'm done and it seems like the issue is solved:
I called my provider and they enabled full IP4 support. I joined 2 games and had good connection to all players!
Thank you very much for your help!
@DasDuelon
You are right, I'm from Germany and my provider is Vodafone. Isn't it possible to change to ip4 with Unity-Media for sure?
I hope you guys get your con-issues solved too, so we can meet online for a couple of matches shortly! :-)
Atreju