[pabs3]

Wikipedia says PTP uses UDP, that is network traffic? or did you mean Internet traffic?

https://en.wikipedia.org/wiki/Precision_Time_Protocol

Edit: ah, you are talking about virtual PTP, which is presumably PTP to the hypervisor instead of network servers. The hypervisor would then keep its own time in sync using GPS, network PTP or NTP.

https://kimmo.suominen.com/blog/2022/09/virtual-ptp-hardware...