nanog mailing list archives

Re: NTP problems/time.windows.com?


From: "Eric S. Raymond" <esr () thyrsus com>
Date: Mon, 3 Apr 2017 22:34:21 -0400

Majdi S. Abbas <msa () latt net>:
      Haven't seen it, but if people are reporting sudden hour
offsets, on the first Monday in April, I'd bet on a DST implementation
bug that hijacked the system clock on their servers.

      This doesn't look like the sort of error you'd get with a free
running clock.

I concur, about the one-hour shift anyway.  The random garbage times
aren't really likely either - jumps that large would tend to get the
source rejected as a falseticker.

It's a weird set of symptoms that rather looks as if they hit two different
failure modes at once.  Dunno.

One of our NTPsec devs posted the link on one of our project channels and
suggested maybe we ought to call M$ with an offer of help...
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