[dns-operations] Strange Responses for 20.in-addr.arpa
Mark_Andrews at isc.org
Wed Apr 25 23:43:37 UTC 2007
> > ns1.csc.com and ns2.csc.com respond to queries for KEY, NXT and SIG RRs
> > but time out
> > for DS, DNSKEY, NSEC, RRSIG and SSHFP RRs, so one guess is that there is a
> > middlebox
> > of some description blocking queries for RR types that it doesn't know
> > about.
> In addition, NS.CSC.COM aren't authoritative for 20.in-addr.arpa, but
> for $N.20.in-addr.arpa with N = [0 .. 255].
Which indicates a delegation problem as 20.in-addr.arpa is
delegated to those servers. ipadmin at csc.com has been CC'd
20.in-addr.arpa. 86400 IN NS NS2.CSC.COM.
20.in-addr.arpa. 86400 IN NS NS1.CSC.COM.
;; Received 76 bytes from 188.8.131.52#53(D.ROOT-SERVERS.NET) in 245 ms
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Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
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