I guess I did not explain exactly what I"m trying to do.
I have a DVR with cameras set up using port forwarding for remote access and it works just fine.
What I wanted to know is can I change to PnP and add another device in this case a thermostat with remote control.
Someone else set up the port forwarding on the DVR I don't know how.
The instructions in the DVR set up was to use PnP if you did not know how to set up port forwarding.
My question would this work (using PPnP)with "both" devices for remote access?
my understanding is PnP assigns addresses and such so it's all automatic.