
The FQDN is only correct when the Arris modem is in "normal" (not Bridge) mode, so I was back to having the problem that port forwarding doesn't work on the Arris modem. The bizarre problem is that when in Bridge mode the WAN-side IP address of the Arris modem gets assigned an incorrect FQDN.

So I figured I'd just set the Arris to Bridge mode and use my own Wi-Fi Access Point / Router to do the port forwarding. I didn't want to figure out or deal with. And the unexplained "features" (prefer private connections, advanced security) and annoying App notifications are all. But I recently changed from a Hitron cable modem to the Arris TG4482A / XB7 which has the ridiculous stupidity that you can only configure port forwarding using the App, and worse than that, instead of this working it would either give me an error message to try later, or would not let me specify the IP address of the internal destination device. I have used the fixed fully-qualified domain name feature that only Rogers offers for many years so I can access devices in my home without having to use DDNS.
