RFC 7871: Client Subnet in DNS QueriesInternet 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 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
