I'm getting the error and subsequent boot on my Hotspot.
The error: "system error critical System rebooted becausee of ping watchdog timeout"
It's getting very annoying. System keeps rebooting.
I don't know of anything enabled to do the pinging.
My Bullet AP has this option for a Ping Watchdog but it's not enabled.
Can't find the source

False alarm, I found it. Yep, Watchdog was ticked to watch an old IP,
MY Bad Bad Bad.
Now I just have an unsoppored hardware error.
I think it's an IP camera that I have Binding to it's IP to bypass Hotspot.