I-D Action: draft-ietf-dnsop-ns-revalidation-05.txt
internet-drafts@ietf.org Mon, 04 March 2024 22:09 UTC
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Subject: I-D Action: draft-ietf-dnsop-ns-revalidation-05.txt
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Internet-Draft draft-ietf-dnsop-ns-revalidation-05.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-05.txt Pages: 9 Dates: 2024-03-04 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 requeried and used to replace the entries with the lower trustworthiness ranking in cache. Resolvers should also periodically revalidate the child delegation by re-quering 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-05 A diff from the previous version is available at: https://author-tools.ietf.org/iddiff?url2=draft-ietf-dnsop-ns-revalidation-05 Internet-Drafts are also available by rsync at: rsync.ietf.org::internet-drafts
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