So I have recently been trying to start a server up for me and my friend. I made a craftbukkit server and properly put in a new map and renamed it "world". I properly port forwarded and I also gave my friend the correct external ip address. When he tries to join he gets something like "java.net.socketexception protocol family unavailable"
I have checked to see if online mode is on(which it is) and I really don't know what else to do. I even reallocated more ram ro the server because I thought that might have been the problem... can someone help?