The Dualcore Netplay branch basically connects to a server and gives you a code to give to players. It has its problems, but it works usually.
Dolphin Master is 100% Peer 2 Peer. You forward a port on host, and then give the clients your IP plus Port, and then you're good.
Dolphin Master is 100% Peer 2 Peer. You forward a port on host, and then give the clients your IP plus Port, and then you're good.