C100 camera: date and time resets to year 2015
I have a problem with my Tapo C100 camera: several times a day, it resets its on-screen display of date and time to "2015-09-07 07:30:07" and then starts counting up from that time.
I can make it display the correct date and time by using the app to select a different time zone and then select the original time zone again. But a few hours later, it reverts again to the year 2015 and always the same date/time.
This is clearly an NTP-related issue (or a bug in the firmware). To try and narrow down the cause, I've captured at my firewall all outbound packets from the device to udp/123. I've found that changing its time zone via the app provokes a substantial burst of NTP activity. Over the 58 minutes following a change of time zone, the C100 issues 467 NTP requests to 10 different time servers, even though the correct time is displayed almost immediately. For each time server, it issues between 41 and 76 requests. After the 58-minute burst of NTP activity, it goes quiet for a few hours.
I haven't yet isolated the "revert to 2015" event to a particular NTP request but I could do so given enough effort. Before I waste any more time on this, I'd appreciate comments, ideas and suggestions. I feel inclined to firewall out all but one time server and see if that has any effect. I'm more inclined to the view that this is a bug in the firmware.
Has anyone else observed this?