A new Request for Comments is now available in online RFC libraries. RFC 7901 Title: CHAIN Query Requests in DNS Author: P. Wouters Status: Experimental Stream: IETF Date: June 2016 Mailbox: pwouters@redhat.com Pages: 16 Characters: 35252 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-dnsop-edns-chain-query-07.txt URL: https://www.rfc-editor.org/info/rfc7901 DOI: http://dx.doi.org/10.17487/RFC7901 This document defines an EDNS0 extension that can be used by a security-aware validating resolver configured to use a forwarding resolver to send a single query, requesting a complete validation path along with the regular query answer. The reduction in queries potentially lowers the latency and reduces the need to send multiple queries at once. This extension mandates the use of source-IP- verified transport such as TCP or UDP with EDNS-COOKIE, so it cannot be abused in amplification attacks. This document is a product of the Domain Name System Operations Working Group of the IETF. EXPERIMENTAL: This memo defines an Experimental Protocol for the Internet community. It does not specify an Internet standard of any kind. Discussion and suggestions for improvement are requested. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC