pfSense: kernel reports TIME_ERROR: 0x4041: Clock Unsynchronized

[gtrovato]

Hi All,

it's some time that I struggle with NTP synchronization problems on several installation of pfSense on Proxmox hosts.
NTP doesn't synchronize.
I've experienced it with different pfSense versions, now I'm on 2.5.1 (and Proxmox 6.1-3).
I've also tried this without success:

https://forum.opnsense.org/index.php?topic=18557.0

I'm pretty sure it's something related to my virtualization environment.

Thanks for the help!