Thanks for looking into this. Unfortunately, I have not been able to reproduce this issue yet. When I run mIRC v7.32 here, under Windows 7/8, it uses the correct 192.168.x.x interface IP address when adding the UPnP entry. Which version of Windows are you using? Can you describe your network setup a little more? If you look in the mIRC Options/Connect/Options/Ports dialog and enable binding to a specific adapter, does that make a difference?
