UPnP has been a bit unreliable (sometimes benefiting from rebooting the DSL modem). It's currently working with programs which need to open ports but it's still not showing up in Network Connections or My Network Places, even though it did at first - after I installed "UPnP User Interface" (which only gives you an icon and some minimal information) in the Windows Components Wizard.
For general networking, there are many tools (both GUI and commandline) built in to Windows to diagnose problems and refresh and reconfigure the network adapters. With UPnP however, there seems to be nothing.
My question is:
How can you diagnose problems and configure UPnP on Windows?
Specifically, I'd like to be able to:
- refresh Windows's view of UPnP devices / force re-discovery (when it's working, the DSL modem shows up as a gateway in both Network Connections and My Network Places)
- probe a device for UPnP availability, similar to ping or telnet (since I know its IP address)
- anything else useful
preferably using Windows (XP)'s native facilities.