GS2220 Firmware V4.80(ABRR.0) | 01/18/2023 - NTP issue

Hello,

We have for some time now dealing with an issue where some switches do not properly register to Nebula even after a factory reset.

After some investigation, I believe the issue lies on the NTP packet that the switch sends to "time.google.com" and it is discarded due to the field "Transmit Timestamp" being all zeros. At least in my packet capture sessions the switch didnt try to reach for *.pool.ntp.org, only google. Update: After firmware upgrade to latest, the "transmit timestamp" is still all zeros, but it doesnt look to be a problem to google anymore and the server replies. Regardless, the switch now queries on pool.ntp.org as well. DM me if you need a capture to look into this issue.

Often the switch comes back to Nebula but I cannot do a SSH session, for instance, problaby due to certificate/time issue related to the NTP time sync fail - in cases where the switch eventually registers to Nebula I can see several logs related to time sync fail.

I have seen that there is fixes related to NTP on recent release notes and I assume it is to solve this kind of issue, but the "V4.80(ABRR.0) | 01/18/2023" is still marked on Nebula as stable, and as NTP seems to be critical to a proper registration, it would be nice if a release with this issue fixed is promoted to stable.