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RFC 6840, "Clarifications and Implementation Notes for DNS Security (DNSSEC)", February 2013

Note: This RFC has been updated by RFC 8749

Source of RFC: dnsext (int)
See Also: RFC 6840 w/ inline errata

Errata ID: 4927
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Petr Špaček
Date Reported: 2017-02-08
Verifier Name: Terry Manderson
Date Verified: 2017-03-01

Section IANA Conside says:

(This document specifies no IANA Actions.)

It should say:

(Add following text:)
This document adds an additional reference for CD bit in the DNS
Parameters - DNS Header Flags registry.


RFC6840 introduces new requirements for validating resolvers. This should be reflected in the DNS Header Flags registry otherwise it is likely DNS Implementors will overlook the new behaviour.

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