Two RFC2317 Questions
Joseph S D Yao
jsdy at center.osis.gov
Wed Apr 10 19:01:50 UTC 2002
On Wed, Apr 10, 2002 at 01:17:56PM -0500, Barry Finkel wrote:
> I query the IP address; I get the CNAME in response.
> 17.0.241.60.216.in-addr.arpa.
>
> I query the CNAME, and I get "NOERROR, ANSWER: 0" in response.
> Is there something else wrong with my configuration?
...
> britaine% dig 17.0.241.60.216.in-addr.arpa.
You need to request the "PTR" record.
dig ptr 17.0.241.60.216.in-addr.arpa.
; <<>> DiG 8.3 <<>> ptr 17.0.241.60.216.in-addr.arpa.
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 8
;; QUERY SECTION:
;; 17.0.241.60.216.in-addr.arpa, type = PTR, class = IN
;; ANSWER SECTION:
17.0.241.60.216.in-addr.arpa. 23h58m26s IN PTR csgax.able.anl.gov.
;; AUTHORITY SECTION:
0.241.60.216.in-addr.arpa. 1h57m58s IN NS ns2.swbell.net.
0.241.60.216.in-addr.arpa. 1h57m58s IN NS dns1.anl.gov.
0.241.60.216.in-addr.arpa. 1h57m58s IN NS dns2.anl.gov.
0.241.60.216.in-addr.arpa. 1h57m58s IN NS ns2.es.net.
0.241.60.216.in-addr.arpa. 1h57m58s IN NS nsx.lbl.gov.
0.241.60.216.in-addr.arpa. 1h57m58s IN NS ns1.swbell.net.
;; ADDITIONAL SECTION:
ns2.swbell.net. 1d19h38m29s IN A 151.164.1.7
dns1.anl.gov. 17h47m37s IN A 130.202.20.5
dns1.anl.gov. 17h47m37s IN A 146.137.64.5
dns2.anl.gov. 17h47m37s IN A 146.139.254.3
dns2.anl.gov. 17h47m37s IN A 130.202.20.3
ns2.es.net. 3h10m54s IN A 134.55.6.130
nsx.lbl.gov. 1h41m11s IN A 131.243.64.3
ns1.swbell.net. 1d19h38m29s IN A 151.164.1.1
;; Total query time: 12 msec
;; FROM: ... to SERVER: ...
;; WHEN: Wed Apr 10 15:00:52 2002
;; MSG SIZE sent: 46 rcvd: 333
--
Joe Yao jsdy at center.osis.gov - Joseph S. D. Yao
OSIS Center Systems Support EMT-B
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