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by mlichvar 1774 days ago
The unicast PTP support can be limited to boundary clocks and the enterprise profile doesn't require transparent clocks to support the unicast mode.

Also, there are different types of PTP transparent clocks. They can either be end-to-end or peer-to-peer, and either one-step or two-step clocks. To be useful for NTP, I think it would need to be an end-to-end transparent clock and ideally it would be a one-step clock to avoid dealing with with the follow-up messages.