rl0(Reltek 8139), LAN IP 192.168.0.6
rdr rl0 0/0 port 4662 -> 192.168.0.6 port 4662 tcp
rdr rl0 0/0 port 4666 -> 192.168.0.6 port 4662 udp
edonkey use tcp port 4662 and udp port 4666 (4662+4)
ref.
http://www.edonkey2000.com/documentation/unreachable.html