thanks for the report! This was brought upstream to ntp via:
(4.2.8p3-RC1) 2015/05/12 Released by Harlan Stenn <st...@ntp.org> * [Bug 2745] ntpd -x steps clock on leap second Fixed an initial-value problem that caused misbehaviour in absence of any leapsecond information. Do leap second stepping only of the step adjustment is beyond the proper jump distance limit and step correction is allowed at all. That is in Xenial and Yakkety - setting to fix released. ** Changed in: ntp (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ntp in Ubuntu. https://bugs.launchpad.net/bugs/1432935 Title: ntpd -x steps clock on leap second (upstream bug: 2745) Status in ntp package in Ubuntu: Fix Released Bug description: in http://bugs.ntp.org/show_bug.cgi?id=2745 | With older versions it was possible to use the -x option to avoid upsetting | applications running on the system when the clock is stepped due to a leap | second. | | It seems in 4.2.6 was added support for inserting/deleting leap seconds on | systems without kernel discipline. However, the clock is now stepped even when | the -x option or tinker step is used to disable stepping. I'm not sure this bug could affect Ubuntu's ntp packages, but I believe that this information is IMPORTANT for some ubuntu users. Note: This bug is copied from https://rhn.redhat.com/errata/RHBA-2015-0690.html, thanks Red Hat. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1432935/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp