IPv6 automatic reverse DNS

White, Andrew Andrew.White2 at charter.com
Sat Oct 29 13:43:05 UTC 2016

Thanks for the clarification, Wes.

Has anyone proposed the method of publishing v6 PTRs on-the-fly as addresses are observed passing through an ISP's router?


Ληdrеw Whiте
Charter Network Operations - DAS DNS
Desk: 314-394-9594 ? Cell: 314-452-4386
andrew.white2 at charter.com

-----Original Message-----
From: Wesley George [mailto:wesgeorge at puck.nether.net] 
Sent: Saturday, October 29, 2016 7:41 AM
To: White, Andrew
Cc: Steve Atkins; NANOG list
Subject: Re: IPv6 automatic reverse DNS

> On Oct 28, 2016, at 11:03 PM, White, Andrew <Andrew.White2 at charter.com> wrote:
> There are two competing drafts for synthetic rule-based PTR responses for IPv6 rDNS:
> Howard Lee, Time Warner Cable (now Charter)
> https://tools.ietf.org/html/draft-howard-isp-ip6rdns-08
> J. Woodworth, CenturyLink
> https://datatracker.ietf.org/doc/draft-woodworth-bulk-rr/

At the risk of getting into IETF administrivia, a little clarification is important here: The first draft you mention above was replaced by the draft I referenced in my previous email. It is currently an adopted WG draft in DNSOP, moving toward working group last call as a consensus document., thus the window for capturing and incorporating feedback is closing soon. The second document does not appear to be associated with any IETF Working Group yet, but it also isn't competing with the first document. The first draft is informational status, discussing the issues and considerations surrounding this problem, of which generating on-the-fly reverse records is one possible solution. The second draft is a proposed standard defining *how* to generate those on-the-fly reverse records assuming one decides that is the right path to take in one's network, and would dovetail nicely via reference to section 2.5 of isp-ip6-rdns.

Wes George

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