[BEHAVE] [Technical Errata Reported] RFC7050 (5152)

RFC Errata System <rfc-editor@rfc-editor.org> Wed, 11 October 2017 04:46 UTC

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

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You may review the report below and at:
http://www.rfc-editor.org/errata/eid5152

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Type: Technical
Reported by: Mark Andrews <marka@isc.org>;

Section: IANA Conside

Original Text
-------------
N/A 

Corrected Text
--------------
8.x DNSSEC

    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).


Notes
-----
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.

Instructions:
-------------
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RFC7050 (draft-ietf-behave-nat64-discovery-heuristic-17)
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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