[ntp:questions] Number of Stratum 1 & Stratum 2 Peers

Rob nomail at example.com
Wed Dec 17 10:11:04 UTC 2014

Martin Burnicki <martin.burnicki at meinberg.de> wrote:
>> Unfortunately, the same mechanism isn't used for leap seconds.
>> There would be no problem at all when the system time ticked in TAI
>> and the addition of the leap seconds is done via some rule table similar
>> to the local time rules.  ntpd would not even be involved in the problem.
> Also agreed. However, actually ntpd expects UTC, not TAI.

Of course it is a hypothetical situation.  When the Unix developers
would have had the foresight to define their clock in TAI rather than
UTC, the NTP designer probably would have used TAI as well, and instead
of the leap second handling there maybe would have been some field to
broadcast the current UTC-TAI offset.  GPS actually does it that way.

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