Internet-Draft draft-ietf-dnsop-ns-revalidation-06.txt is now available. It is
a work item of the Domain Name System Operations (DNSOP) WG of the IETF.
Title: Delegation Revalidation by DNS Resolvers
Authors: Shumon Huque
Paul Vixie
Willem Toorop
Name: draft-ietf-dnsop-ns-revalidation-06.txt
Pages: 10
Dates: 2024-03-17
Abstract:
This document recommends improved DNS [RFC1034] [RFC1035] resolver
behavior with respect to the processing of Name Server (NS) resource
record sets (RRset) during iterative resolution. When following a
referral response from an authoritative server to a child zone, DNS
resolvers should explicitly query the authoritative NS RRset at the
apex of the child zone and cache this in preference to the NS RRset
on the parent side of the zone cut. The (A and AAAA) address RRsets
in the additional section from referral responses and authoritative
NS answers for the names of the NS RRset, should similarly be re-
queried and used to replace the entries with the lower
trustworthiness ranking in cache. Resolvers should also periodically
revalidate the child delegation by re-querying the parent zone at the
expiration of the TTL of the parent side NS RRset.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-dnsop-ns-revalidation/
There is also an HTMLized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-ns-revalidation-06
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-dnsop-ns-revalidation-06
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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