RFC 7871 · INFORMATIONAL · 2016

Client Subnet in DNS Queries

Overview

RFC 7871, “Client Subnet in DNS Queries”, is an Informational document published in May 2016 by C. Contavalli, W. van der Gaast, D. Lawrence, W. Kumari. The canonical text is published by the RFC Editor.

Abstract

This document describes an Extension Mechanisms for DNS (EDNS0) option that is in active use to carry information about the network that originated a DNS query and the network for which the subsequent response can be cached. Since it has some known operational and privacy shortcomings, a revision will be worked through the IETF for improvement.

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

What “Informational” means

Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.

Read this RFC

The canonical text of RFC 7871 is hosted at rfc-editor.org. Available in TXT,HTML.

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