Clever! But in my case, there several PC's as destinations. Since the webcams reside on one, it would work for that. However, the owner yanked the G3100 and put her G1100 in, so everything is back to running just fine. (Years ago, I played with a free utility that would forward ports on a pc, so I could look that up and have it on that PC and do forwarding from it.) But saving the rental money and having things work right made more sense.
I did walk around the edge of the property gauging signal strength and found the G3100 up to 10db stronger in some places, but plenty of signal from the G1100. So, she saves the $15/mon rental for the G3100 and avoids the quirk.