Summary:
The Client List of the web admin interface of the SBG7600AC2 is empty. There should be some reservations and number of devices attached.
ISP: Xfinity
Firmware: 9.1.103AA85
Had some intermittent connection issues the last few days. Xfinity had just done some network upgrade work in my neighborhood, so it may have been related to that. Got much worse with the gateway seeming to become unresponsive. Internal network routing failing and the admin pages not loading. Had to restart a number of times. I kept catching it display "Your unit is updating, please wait for a moment." with nothing happening and without any subsequent change in the firmware. Perhaps a bad update was also being pushed? That or my device somehow got in a bad state?
A tech was out today and confirmed signal issues coming in as well as bad wiring in the house. That aspect should hopefully be resolved. Unclear if these are related.