Re: [LEAPSECS] NTP behavior in Australia

From: Poul-Henning Kamp <>
Date: Mon, 02 Jan 2006 09:32:31 +0100

In message <>, Steve Allen writes:
>Here is one indication of NTP response to the presence of low stratum
>servers which did not behave well.

I grabbed a set if IP#'s from and monitored them in the 24
hours before and 8 hours after the leap.

Out of a set of 12 IP#'s two public stratum 1 servers never set the
leap bit, but did apply the leapsecond locally.

One of the 12 was a stratum 1 using DCF signal, and that one as expected
only set the leap warning one hour before the event.

Ten hours after the event, two stratum 3 servers in the set still had
the leap warning bits set.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk_at_FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
Received on Mon Jan 02 2006 - 00:43:19 PST

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