barmar at alum.mit.edu
Thu Oct 10 06:54:13 UTC 2013
In article <mailman.1483.1381387501.20661.bind-users at lists.isc.org>,
Jim Pazarena <bind at paz.bz> wrote:
> I set up a subnet on my server, complete with rdns, and ARIN has been
> adjusted for my two dns servers (ns.qcislands.net & ns2.qcislands.net)
> the subnet: 184.108.40.206/24
> if you do a lookup of, for instance: 220.127.116.11
> and bounce that nslookup off of other dns servers, SOME say:
> Authoritative answers can be found from: <ns & ns2>
> others, well, at least google 18.104.22.168 do not show anything as
> authoritative, altho the IP DOES resolve.
> I am curious if 22.214.171.124 isn't trying, or instead, am I missing
> something which 126.96.36.199 considers incomplete and therefore
> un-authoritative ?
> I just want to make sure my setup is accurate. Thanks.
Including the Authority Section in a response is optional (unless it's a
delegation or negative response). If you ask them explicitly for the NS
records they show it:
$ dig @188.8.131.52 -x 23.235.75 ns
;; ANSWER SECTION:
75.235.23.in-addr.arpa. 21600 IN NS ns2.qcislands.net.
75.235.23.in-addr.arpa. 21600 IN NS ns.qcislands.net.
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