Client Subnet in DNS Queries (RFC7871)
Original Publication Date: 2016-May-01
Included in the Prior Art Database: 2016-Jun-29
Internet Society Requests For Comment (RFCs)
C. Contavalli: AUTHOR [+4]
Many Authoritative Nameservers today return different responses based on the perceived topological location of the user. These servers use the IP address of the incoming query to identify that location.
Internet Engineering Task Force (IETF) C. Contavalli Request for Comments: 7871 W. van der Gaast Category: Informational Google ISSN: 2070-1721 D. Lawrence Akamai Technologies W. Kumari Google May 2016
Client Subnet in DNS Queries
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.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for informational purposes.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7871.
al. Informational [Page 1]
RFC 7871 Client Subnet in DNS Queries May 2016
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