[Pool] a leap second on April 1st. Is it a prank?

Steven Sommars stevesommarsntp at gmail.com
Thu Apr 2 12:20:37 UTC 2015


NTP servers may incorrectly advertise leap=1 which can propagate to clients.
Unfortunately this is not a rare occurrence.

On Wed, Apr 1, 2015 at 8:47 AM, etameta <meta at fastwebnet.it> wrote:

> I've seen this on several machines in Italy:
>
> Apr  1 01:59:59 hostname kernel: [2552517.563918] Clock: inserting leap
> second 23:59:60 UTC
>
> Now, a leap second is NOT scheduled for today, so I wonder what's
> happening.
>
> It's been confirmed on Ubuntu, Debian and RedHat boxes. I don't have access
> to boxes with other OSes, but my guess is this isn't client-specific.
>
> On the machines where it happened, it happened at around 02:00 GMT+0200
> today (April 1st).
>
> Has it been observed outside Italy?
>
> Is it an April's fool prank?
>
> Thanks.
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