Adding a data point...
Have been away on a trip. Noticed some odd things happening (or not happening) and came home to 'Zigbee Radio is Offline' alert.
The alert and the corresponding entry in the Hub Events log is the only indication I can find in the logs. The Past Logs don't show a discrete entry that would indicate a problem, just the absence of Zigbee devices' activity after the time of the offline event.
Hub has been running fine from a device perspective (and otherwise.) I have a couple of chatty Zigbee devices, but they have been in place for a while, with no issues. I did have an odd database issue a week or so ago, but rebooted with a rebuild and it came back fine.
A shutdown-and-power-removal reboot brought the radio back, but it says the hub is under severe load. The only thing that makes sense is the zigbee devices that had been offline for ~36 hours seem to be sending queued events. (ETA: And, indeed, the load alert has gone away after ~10m.)
@gopher.ny @bobbyD Do you want to have a peek before I update to 2.3.9?
