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RFC 7050, "Discovery of the IPv6 Prefix Used for IPv6 Address Synthesis", November 2013

Source of RFC: behave (tsv)

Errata ID: 5152
Status: Rejected
Type: Technical
Publication Format(s) : TEXT

Reported By: Mark Andrews
Date Reported: 2017-10-11
Rejected by: Magnus Westerlund
Date Rejected: 2021-01-13

Section IANA Conside says:


It should say:


    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.

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