So far the only way to clear upnp is to reboot the router. Or turn it off which is stupid. Also then you have to reset the timing for the harddrive or it will not goto sleep.

I found other software will clear upnp ports it is using. but these two, which skype and window 7 do not. See below.
Teredo 192.168.1.102 58374 58374 UDP
Teredo 192.168.1.101 57999 57999 UDP
Skype UDP at 192.168.1.100:443 (1118) 192.168.1.100 443 443 UDP
Skype TCP at 192.168.1.100:443 (1118) 192.168.1.100 443 443 TCP