All hands alert - NTPsec gets bad responses from Amazon NTP servers

Eric S. Raymond esr at
Sun Dec 3 20:58:52 UTC 2017

Kurt Roeckx <kurt at>:
> On Sun, Dec 03, 2017 at 02:43:04PM -0500, Eric S. Raymond via devel wrote:
> > All hands alert.  We have our first, or maybe second depending on how
> > you count, serious bug. About 33% of the time, NTPsec is eliciting bad
> > packets from Amazon time service. Classic does not have this problem.
> I would argue that no matter what the client sends, the server
> should send back a correct packet, and it more seems to be a
> problem with the Amazon time service.

You may very well be right.  I suspect this too.

But supposing that's so, we look a lot better if we can figure out what
tickles the bug and tell them.
		<a href="">Eric S. Raymond</a>

My work is funded by the Internet Civil Engineering Institute:
Please visit their site and donate: the civilization you save might be your own.

More information about the devel mailing list