Hi folks,
I've been running some leap seconds tests with ntpd and found a problem
that ntpd 4.2.6* will *never* handle a current leap second if ntpd has
been configured to use a leap second file, and the leap second file is
*outdated*.
It will not even handle the leap second if it receives a valid leap
second warning from an upstream NTP server, or from a refclock.
This is *not* a bug but the intended behavior. See NTP bug 861, comment
46 and 47, as well as the following discussion:
http://bugs.ntp.org/show_bug.cgi?id=861#c46
So if you are running ntpd 4.2.6 with a leap second file configured then
please make sure to use the current version of the leap second file.
Otherwise you will encounter a problem when the leap second occurs.
BTW, in 4.2.8 this has fortunately been reworked, so an expired leap
second file is ignored as it ought to be, and leap second announcements
from other sources are then accepted.
Martin
--
Martin Burnicki
Senior Software Engineer
MEINBERG Funkuhren GmbH & Co. KG
Email: [email protected]
Phone: +49 (0)5281 9309-14
Fax: +49 (0)5281 9309-30
Lange Wand 9, 31812 Bad Pyrmont, Germany
Amtsgericht Hannover 17HRA 100322
Geschäftsführer/Managing Directors: Günter Meinberg, Werner Meinberg,
Andre Hartmann, Heiko Gerstung
Web: http://www.meinberg.de
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