mailing list bounces

Mark Andrews marka at isc.org
Sun Feb 13 19:12:06 CST 2011


In message <121334192.111427.1297644483313.JavaMail.root at int-mailstore01>, "Larr
y J. Blunk" writes:
> 
> 
> ----- Original Message -----
> > It looks like one of nanog's outbound servers doesn't have a PTR
> > record.
> > 
> > Mark
> > 
> > Received:from s0.nanog.org (207.75.116.162) by edge.atlasbiz.com
> > (192.168.198.21
> > ) with Microsoft SMTP Server id 8.2.255.0; Sun, 13 Feb 2011 21:34:17
> > +0000
> > 
> > 
> > ; <<>> DiG 9.6.0-APPLE-P2 <<>> -x 207.75.116.162
> > ;; global options: +cmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 29686
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
> > 
> > ;; QUESTION SECTION:
> > ;162.116.75.207.in-addr.arpa. IN PTR
> > 
> > ;; AUTHORITY SECTION:
> > 116.75.207.in-addr.arpa. 10764 IN SOA dns.merit.net. ejd.merit.edu.
> > 2011021202 28800 14400 2419200 14400
> > 
> > ;; Query time: 0 msec
> > ;; SERVER: 127.0.0.1#53(127.0.0.1)
> > ;; WHEN: Mon Feb 14 09:54:42 2011
> > ;; MSG SIZE rcvd: 107
> > 
> > --
> > Mark Andrews, ISC
> > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > PHONE: +61 2 9871 4742 INTERNET: marka at isc.org
> 
> 
> 
> 
>    Oops, fixed.   The machines were moved to a new a
> subnet this morning and I was so preoccupied with remembering
> to create the ip6.arpa PTR records that I completely forgot
> the in-addr.arpa's.  Bet that's a first.  I suppose it's
> progress to be thinking about v6 first and v4 second.
> 
> 
>  -Larry Blunk
>   Merit

It will be much better when the OS's just register themselves in
the DNS.  Humans shouldn't have to do this when a machine renumbers.
Named can already authenticate PTR updates based on using TCP and
the source address of the update.  For A/AAAA records you setup a
cryptographically strong authentication first.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org




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