[Marabekm]

Good afternoon. I'm hoping someone with some deep technical knowledge of internet can help.

I'm having a strange issue. I can host cooperative missions just fine over hyperlobby. Almost everyone can join. But one player. He lives in Australia. But you see, there are other players from down under, and they can join. Its the same with him if he host a game. Everyone can join his game, but me.

So, there's a disconnect somewhere between me and him over the internet. I don't know how to find and fix it. Perhaps someone more tech savy can help?

I can tell you, I've tried Pinging his IP.
All I get is: Destination Unreachable