Received the new firmware 4 days ago.
Broke port forwards for a second router set in the DMZ. It looks like it also does not update DynDNS.
My son has multiple folding computers on a secondary router on a different subnet.
When the Arris router rebooted with the new firmware it broke some port forward rules on the secondary router.
He is trying to fix it.
Will let everybody know if he found a solution.
EDIT: Had to do a Factory Reset of the router. All is working again.
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