From owner-freebsd-isp  Mon Apr 29 18:11:51 2002
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From: "Peter Brezny" <pbrezny@purplecat.net>
To: <freebsd-isp@freebsd.org>
Subject: Help host resolution mixup.
Date: Mon, 29 Apr 2002 21:11:43 -0400
Message-ID: <HDEBKOFAJCKIJIDMEINCGEFJELAA.pbrezny@purplecat.net>
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Hi everyone.

I think I've got a host resolution mixup.

Here are the symptoms.

Domains registered with network solutions still show the old ip address for
ns1 and ns2.purplecat.net even though the forward lookup for those names
changed more than 3 months ago.  Domains registered at other registrars
don't seem to have this problem.

I'm in the process of moving my primary name servers from one isp to
another, and I _do_ have some issues with my reverse resolution:
new isp
ns1.purplecat.net -->  208.133.44.46
rack.purplecat.net -->  208.133.44.46
208.133.44.46 -->  rack.purplecat.net

old isp
mail.purplecat.net --> 209.16.228.148
209.16.228.148 -->  ns1.purplecat.net

I was under the impression that i could 'get away' with such a
configuration, and that dns would continue to work even if the reverse
lookup of a name server did not match.  Is this not the case?

TIA,

Peter Brezny
purplecat.net


test# dig @G.GTLD-SERVERS.net ns1.purplecat.net

; <<>> DiG 8.3 <<>> @G.GTLD-SERVERS.net ns1.purplecat.net
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;;      ns1.purplecat.net, type = A, class = IN

;; ANSWER SECTION:
ns1.purplecat.net.      2D IN A         208.133.44.46

;; AUTHORITY SECTION:
purplecat.net.          2D IN NS        ns1.purplecat.net.
purplecat.net.          2D IN NS        NS2.purplecat.net.

;; ADDITIONAL SECTION:
ns1.purplecat.net.      2D IN A         208.133.44.46
NS2.purplecat.net.      2D IN A         208.133.44.47

;; Total query time: 74 msec
;; FROM: test.skyrunner.net to SERVER: G.GTLD-SERVERS.net  192.42.93.30
;; WHEN: Mon Apr 29 20:44:16 2002
;; MSG SIZE  sent: 35  rcvd: 115

Peter Brezny
purplecat.net


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