RFC 5001 · PROPOSED STANDARD · 2007

DNS Name Server Identifier Option

Overview

RFC 5001, “DNS Name Server Identifier Option”, is a Proposed Standard document published in August 2007 by R. Austein. The canonical text is published by the RFC Editor.

Abstract

With the increased use of DNS anycast, load balancing, and other mechanisms allowing more than one DNS name server to share a single IP address, it is sometimes difficult to tell which of a pool of name servers has answered a particular query. While existing ad-hoc mechanisms allow an operator to send follow-up queries when it is necessary to debug such a configuration, the only completely reliable way to obtain the identity of the name server that responded is to have the name server include this information in the response itself. This note defines a protocol extension to support this functionality. [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 5001 is hosted at rfc-editor.org. Available in TXT,HTML.

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