First, the computer used dhcp instead of static allocation when obtaining the router ip. Then change it to static allocation. The 2.tcp/udp port number is optional. All ports can be used except common ports and ports already occupied by other programs. Thirdly, the key is whether the port number set in emule is the same as the port number mapped by the router. Tcp/udp * * * two numbers, first set manually in the electric donkey, or let the electric donkey automatically generate. Then go to the router and map the set two port numbers to the local ip.