Op 06-03-2024 om 22:06 schreef Wessels, Duane:

Hi, some initial thoughts:

RFC 2181 says "Data from a zone transfer, other than glue” but this draft doesn’t make any exceptions for glue or non-authoritative data from a zone transfer.  Is that intentional?
Well, RFC 2181 had a uniquely broad definition of glue (see also the terminology draft: https://www.ietf.org/archive/id/draft-ietf-dnsop-rfc8499bis-10.html#section-7-2.29), so I came up with "other than occluded data" to be more generic, but I suppose that wouldn't include the delegation NS records themselves, so that won't work either. I'll try to come up with something better...
Should RFC 8767 stale data be ranked differently than fresh data?
Should EDNS Client Subnet play into ranking?

I like your thinking! Yes, fresh data should replace stale data in resolver caches, and yes a more specific ECS prefix answer is preferable over a less specific ECS prefix. The draft is intended to start re-evaluation and re-thinking of that ranking. The authors are planning to discuss this extensively at the hackathon preceding IETF 119. This is already very good input! So, Thanks!

-- Willem


DW




On Mar 4, 2024, at 6:37 PM, Benno Overeinder <be...@nlnetlabs.nl> wrote:

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-------- Forwarded Message --------
Subject: I-D Action: draft-toorop-dnsop-ranking-dns-data-00.txt
Date: Mon, 04 Mar 2024 13:12:26 -0800
From: internet-dra...@ietf.org
To: i-d-annou...@ietf.org

Internet-Draft draft-toorop-dnsop-ranking-dns-data-00.txt is now available.

  Title:   Ranking Domain Name System data
  Authors: Paul Hoffman
           Shumon Huque
           Willem Toorop
  Name:    draft-toorop-dnsop-ranking-dns-data-00.txt
  Pages:   4
  Dates:   2024-03-04

Abstract:

  This document extends the list ranking the trustworthiness of domain
  name system (DNS) data (see Section 5.4.1 of [RFC2181]).  The list is
  extended with entries for root server names and addresses built-in
  resolvers, and provided via a root hints file with the lowest
  trustworthiness, as wel as an entry for data which is verifiable
  DNSSEC secure with the highest trustworthiness.  This document
  furthermore assigns ranked values to the positions of the list for
  easier reference and comparison of trustworthiness of DNS data.

The IETF datatracker status page for this Internet-Draft is:
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There is also an HTMLized version available at:
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Internet-Drafts are also available by rsync at:
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