[BEHAVE] [Errata Rejected] RFC7050 (5152)

RFC Errata System <rfc-editor@rfc-editor.org> Wed, 13 January 2021 15:21 UTC

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Subject: [BEHAVE] [Errata Rejected] RFC7050 (5152)
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The following errata report has been rejected for RFC7050,
"Discovery of the IPv6 Prefix Used for IPv6 Address Synthesis".

You may review the report below and at:

Status: Rejected
Type: Technical

Reported by: Mark Andrews <marka@isc.org>
Date Reported: 2017-10-11
Rejected by: Magnus Westerlund (IESG)

Section: IANA Conside

Original Text

Corrected Text

    ipv4only.arpa MUST be insecurely delegated.  This allows ISP's to
    modify / generate AAAA responses for ipv4only.arpa AAAA queries that
    will pass through unmodified caching servers as required by 8.1 (4).

The protocol as described does not work when there is a validating caching server in the resolution path.  

IANA should have been instructed to insecurely delegate ipv4only.arpa.  This allows ISP's to modify the
AAAA response without running foul of DNSSEC  validation.
So this errata was correct on the issue, but errata was not the appropriate way of resolving this issue. RFC 8880 that updates RFC 7050 specifies a resolution to this errata. 

RFC7050 (draft-ietf-behave-nat64-discovery-heuristic-17)
Title               : Discovery of the IPv6 Prefix Used for IPv6 Address Synthesis
Publication Date    : November 2013
Author(s)           : T. Savolainen, J. Korhonen, D. Wing
Category            : PROPOSED STANDARD
Source              : Behavior Engineering for Hindrance Avoidance
Area                : Transport
Stream              : IETF
Verifying Party     : IESG