If you feel I'm doing a disservice, I'm glad to hear it. *blank stare* There's nothing misleading about the fact that the user has 1) uses private network addressing spaces, 2) uses multiple layers of NAT, 3) uses a VPN. This configuration is uncommon, and I can assure you, will not
become more common over the next 4 years.
I was simply showing Bill_MI
a real example of how a user's overly complex environment resulted in UPnP being accessible via the Internet.