RFC 7901

CHAIN Query Requests in DNS, June 2016

Canonical URL:
https://www.rfc-editor.org/rfc/rfc7901.txt
File formats:
Plain TextPDF
Status:
EXPERIMENTAL
Author:
P. Wouters
Stream:
IETF
Source:
dnsop (ops)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC7901

Discuss this RFC: Send questions or comments to dnsop@ietf.org

Other actions: Find Errata (if any)  |  Submit Errata  |  Find IPR Disclosures from the IETF


Abstract

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.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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