[dns-operations] IPv6 PTR records

Roosenraad, Chris chris.roosenraad at twcable.com
Fri Dec 17 16:24:33 UTC 2010


We've been debating this internally as well.  I'd like to point everyone to a IETF draft documents by one of my co-workers.


This document was intended to discuss the various options on how to handle PTR records in IPv6.  Personally, I think the dynamically generated option with 2.5 is the only one that will really scale/work on a large network, but I'm always interested to see where others are going.

Chris R. Roosenraad
Principal Engineer
Time Warner Cable - ATG
13820 Sunrise Valley Drive
Herndon, VA  20171
+1 (703) 345 3438
chris.roosenraad at twcable.com

From: Wayne MacLaurin <wayne at dns-oarc.net<mailto:wayne at dns-oarc.net>>
Date: Fri, 17 Dec 2010 10:16:25 -0500
To: "dns-operations at mail.dns-oarc.net<mailto:dns-operations at mail.dns-oarc.net>" <dns-operations at mail.dns-oarc.net<mailto:dns-operations at mail.dns-oarc.net>>
Subject: Re: [dns-operations] IPv6 PTR records

That's an excellent question !

I seem to recall a heated debate at the RIPE meeting in Rome back in November.     It would seem that most people wish PTR was never invented and it causes more grief than its worth.    A few folks seemed to be resigned to having to do PTR for MTAs and other services that have built-in requirements but most would like to see the entire concept go away….

Anybody else, who's rolling out IPv6 on a large scale, have any comments ?

Wayne MacLaurin
Executive Director, DNS-OARC
wayne at dns-oarc.net<mailto:wayne at dns-oarc.net>

On 2010-12-17, at 10:02 AM, R.P. Aditya wrote:

I like to question my habits -- the current one: while getting ready to
roll out IPv6, whether to bother with PTR records at all, and if so,
whether to just automatically generate them (except maybe for MTAs) and
not bother to match the forwards (so far, I'm not convinced either way
and given the pace of the rollout, time can tell).

R.P. (Adi) Aditya
Network Architect
ITSComm Network Engineering
University of Michigan
+1 (734) 330-2499
rpaditya at umich.edu<mailto:rpaditya at umich.edu>

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