Naldon

I was playing with my brother last night ( same house via WiFi) no problem and when we went to try and play today we both couldnt connect to the same server. It would always kick us out when the other person went to join. Does anyone know of a fix?

bump

I was searching online and it may be because my router has a strict NAT type, but im not sure. How would i try my IP in the DMZ???