[ntp:questions] Re: What does 188.8.131.52 refer to?
martin.burnicki at meinberg.de
Thu Nov 10 10:07:43 UTC 2005
Danny Mayer wrote:
> The refid should NOT be fudgeable, it's meant for loop prevention.
In fact AFAIK it is fudgeable only for refclocks, not for normal
>> .. beside the fact that ntpq may try to do DNS reverse lookups on that
>> number, which will not give any useful result, but introduce delays until
>> the DNS query times out:
>> # host 184.108.40.206
>> Host 220.127.116.11.in-addr.arpa not found: 2(SERVFAIL)
> It shouldn't, it's the refid and not an IPv4 address.
Right, it shouldn't. It should display ".INIT." instead of that number, but
since it displays the number it has not determined that the refid should be
interpreted as a string.
I've observed with earlier versions of ntpq that when it has not determined
that the refid is a string it *has* sent DNS reverse lookups for the
corresponding number. I've posted that on the bugs list at the beginning of
2002. Unfortunately this was before the mailman era, so you won't find this
in the mailman archives.
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