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From: Alvaro Herrera <[email protected]>
To: Marc G. Fournier <[email protected]>
Cc: Magnus Hagander <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: Andreas 'ads' Scherbaum <[email protected]>
Cc: [email protected]
Subject: Re: what is up with the PG mailing lists?
Date: Wed, 7 Nov 2007 08:59:08 -0300
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <20071101080959.49f3087b@scratch>
	<[email protected]>
	<[email protected]>
	<20071101084752.64ac3936@scratch>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>

Marc G. Fournier wrote:

> - --On Tuesday, November 06, 2007 21:33:08 +0100 Magnus Hagander 
> <[email protected]> wrote:
> 
> > dig -x 200.46.204.187
> >
> > returns
> > 187.204.46.200.in-addr.arpa. 18000 IN   PTR     maia-2.hub.org.
> >
> > Similar for -1.
> 
> Right, and?

It's an A RR for maia.hub.org.

$ dig maia.hub.org

; <<>> DiG 9.4.1-P1 <<>> maia.hub.org
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53021
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 3, ADDITIONAL: 3

;; QUESTION SECTION:
;maia.hub.org.                  IN      A

;; ANSWER SECTION:
maia.hub.org.           86400   IN      A       200.46.204.182
maia.hub.org.           86400   IN      A       200.46.204.183
maia.hub.org.           86400   IN      A       200.46.204.184
maia.hub.org.           86400   IN      A       200.46.204.187
maia.hub.org.           86400   IN      A       200.46.204.191


These numbers all resolve back to a different name:
$ for i in 182 183 184 187 191; do dig +short -x 200.46.204.$i; done
maia-5.hub.org.
maia-4.hub.org.
maia-3.hub.org.
maia-2.hub.org.
maia-1.hub.org.

The names resolve OK to the numbers:

$ for i in 182 183 184 187 191; do dig +short -x 200.46.204.$i; done |
xargs -n 1 dig +short
200.46.204.182
;; Warning: ID mismatch: expected ID 15438, got 50558
200.46.204.183
200.46.204.184
200.46.204.187
200.46.204.191

-- 
Alvaro Herrera                               http://www.PlanetPostgreSQL.org/
"Las cosas son buenas o malas segun las hace nuestra opinión" (Lisias)



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