A Common Operational Problem in DNS Servers: Failure to Communicate
RFC 8906, “A Common Operational Problem in DNS Servers: Failure to Communicate”, is a Best Current Practice document published in September 2020 by M. Andrews, R. Bellis. The canonical text is published by the RFC Editor.
Abstract
The DNS is a query/response protocol. Failing to respond to queries, or responding incorrectly, causes both immediate operational problems and long-term problems with protocol development.
This document identifies a number of common kinds of queries to which some servers either fail to respond or respond incorrectly. This document also suggests procedures for zone operators to apply to identify and remediate the problem.
The document does not look at the DNS data itself, just the structure of the responses.
What “Best Current Practice” means
Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.
The canonical text of RFC 8906 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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