Re: NTP problems/time.windows.com?

["Jay R. Ashworth" <jra () baylink com>]

----- Original Message -----
> From: "esr" <esr () thyrsus com>
> To: "Majdi S. Abbas" <msa () latt net>
> Cc: "jra" <jra () baylink com>, "North American Network Operators' Group" <nanog () nanog org>
> Sent: Monday, April 3, 2017 10:34:21 PM
> Subject: Re: NTP problems/time.windows.com?

> 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.

It's not entirely clear whether it's *entirely* MSWin clients; I can't 
imagine anything being pointed at those servers that wasn't, though, cause
who the hell would?

Anyone smart enough to manually select NTP upstreams isn't going *there*...

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra () baylink com
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