Thanks to TheAKbear for the UPnP info that is what I am looking for.
When I read the thermostat instructions they said make sure your router will give an IP address so I assumed this meant you have to be set up for UPnP.
Right now my router is configured for port forwarding and the DVR is connected to the router directly through the Ethernet cable, the thermostat will be through the WIFI and remote access will be through Honeywell's cloud.
So I assume I will be OK without having to change the DVR to UPnP and the router will provide the IP address to the thermostat by WIFI.