The identd port is being identified as "auth" by TcpView, so that looks fine. mIRC is creating both an IPv4 and IPv6 port for identd. So the issue now is why port 113 is not appearing in your router UPnP list. Do you have port 113 set up for port forwaring in your router? That may be interfering with UPnP. Since /socklisten -p is working, I cannot think of another reason why identd would not work in this case, other than router or windows configuration.
