Connecting to online game hosted from same network

[bepisBoy]

Hey guys,

Me and my brother are trying to do some multiplayer with some friends.
My friends can connect just fine, but as soon as my brother joins from his PC (which is on the same local network) he gets a tombstone symbol in the lobby and he can't connect to the game.

Is there a certain configuration we need to get around this? Or can people from the same local network not connect to the same neo ee lobby?

Thanks, if I'm being too vague or you don't quite understand let me know, I'd like to figure this out.

[bepisBoy]

We also tried connecting in a LAN game, but if I'm hosting my lobby via LAN it doesn't show up on his list at all.

[bepisBoy]

I changed the port number in 'Choose network adapter' in Options, and my brother can atleast see my LAN lobby now. But whenever he tries to connect he gets the error code: WS_WSAETIMEDOUT

We still can't get into the same game via the neo ee lobby either.