A new Request for Comments is now available in online RFC libraries.
RFC 9077
Title: NSEC and NSEC3: TTLs and
Aggressive Use
Author: P. van Dijk
Status: Standards Track
Stream: IETF
Date: July 2021
Mailbox: peter.van.d...@powerdns.com
Pages: 8
Updates: RFC 4034, RFC 4035, RFC 5155, RFC 8198
I-D Tag: draft-ietf-dnsop-nsec-ttl-05.txt
URL: https://www.rfc-editor.org/info/rfc9077
DOI: 10.17487/RFC9077
Due to a combination of unfortunate wording in earlier documents,
aggressive use of NSEC and NSEC3 records may deny the existence of
names far beyond the intended lifetime of a denial. This document
changes the definition of the NSEC and NSEC3 TTL to correct that
situation. This document updates RFCs 4034, 4035, 5155, and 8198.
This document is a product of the Domain Name System Operations Working Group
of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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