[dnsext] [Technical Errata Reported] RFC4592 (5119)

RFC Errata System <rfc-editor@rfc-editor.org> Thu, 21 September 2017 10:54 UTC

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Subject: [dnsext] [Technical Errata Reported] RFC4592 (5119)
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The following errata report has been submitted for RFC4592,
"The Role of Wildcards in the Domain Name System".

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You may review the report below and at:
http://www.rfc-editor.org/errata/eid5119

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Type: Technical
Reported by: Karst Koymans <K.Koymans@uva.nl>

Section: 4.7

Original Text
-------------
4.7.  NSEC RRSet at a Wildcard Domain Name

   Wildcard domain names in DNSSEC signed zones will have an NSEC RRSet.
   Synthesis of these records will only occur when the query exactly
   matches the record.  Synthesized NSEC RRs will not be harmful as they
   will never be used in negative caching or to generate a negative
   response [RFC2308].


Corrected Text
--------------
4.7.  NSEC RRSet at a Wildcard Domain Name

   Wildcard domain names in DNSSEC signed zones will have an NSEC RRSet.
   NSEC RRSets must not be synthesized from this wildcard NSEC.

Notes
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Synthesizing these records would destroy the semantics of the NSEC chain and could be very harmful if implementations would cache them and use them for "Aggressive Use of DNSSEC-Validated Cache" (RFC 8198).

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RFC4592 (draft-ietf-dnsext-wcard-clarify-11)
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Title               : The Role of Wildcards in the Domain Name System
Publication Date    : July 2006
Author(s)           : E. Lewis
Category            : PROPOSED STANDARD
Source              : DNS Extensions
Area                : Internet
Stream              : IETF
Verifying Party     : IESG