There isn't such a misconfiguration with ntpd. Alas, not everybody runs ntpd. :)

I'd be curious to see some hard numbers on the percentage of complaint clients vs. non-complaint. The number of clients rate-limited by my iptables rules hovers close to 50%, which is rather depressing when you think about it. My rules are far more liberal then the default minpoll and burst options in NTPD, but I still see nearly half of my clients getting rate-limited from time to time. A handful of those are doubtless multiple machines behind NAT, but even allowing for that still leaves a depressingly large number of non-compliant clients that I have to contend with.

Tim


On 12/16/2013 10:07 AM, Matt Wagner wrote:

I'm still pretty curious what causes a client to do this, though. I can't see an obvious
misconfiguration that would do this.

--
Matt


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