On Wed, Nov 06, 2019 at 12:36:07PM +0000, shouldbe q931 wrote:
> As I read the documentation, when the ptp slave starts there is a
> first update, then a second update etc etc.

Yes.
 
> If the grandmaster was rebooted or changed, then there might be a
> first update from that instance of a Grandmaster, it would not be the
> _first_ update of the ptp slave.

No.  If the GM goes away, then the slave will enter the LISTENING
state.  Afterwards, the first update will be applied during the
transition from the UNCALIBRATED to the SLAVE state.

Thanks,
Richard


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