Re: [gpsd-dev] Clarifications needed for the time-service HOWTO

[Hal Murray]

address@hidden said:
> # ntptrace ntp.ubuntu.com
> 91.189.89.199: timed out, nothing received
> ***Request timed out

> They seem to be down.

No, the servers are OK.  The problem is a buggy tool and/or a poor choice of 
tool.  Try sntp -d xxx or ntpdate -d xxx  (ntpdate is depricated)

ntptrace calls ntpq which uses mode 6 packets.  That's the back door for 
debugging/monitoring.  It's disabled (from the outside world) on many/most 
ntpd servers that are exposed to the big/bad internet.  But when it works, it 
gives text printout which is easier to parse from simple scripts.


-- 
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