Client Subnet in DNS Queries
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.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 7871 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 7870 Dual-Stack Lite Management Information Base for Address Family Transition Routers
- RFC 7872 Observations on the Dropping of Packets with IPv6 Extension Headers in the Real World
- RFC 7869 The "vnc" URI Scheme
- RFC 7873 Domain Name System Cookies
- RFC 7868 Cisco's Enhanced Interior Gateway Routing Protocol
- RFC 7874 WebRTC Audio Codec and Processing Requirements
- RFC 7867 RTP Control Protocol Extended Report Block for Loss Concealment Metrics for Video Applications
- RFC 7875 Additional WebRTC Audio Codecs for Interoperability