STD 75

RFC 6891

Extension Mechanisms for DNS (EDNS(0)), April 2013

File formats:
icon for text file icon for PDF icon for HTML icon for inline errata
Status:
INTERNET STANDARD
Obsoletes:
RFC 2671, RFC 2673
Authors:
J. Damas
M. Graff
P. Vixie
Stream:
IETF
Source:
dnsext (int)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC6891

Discuss this RFC: Send questions or comments to the mailing list dnsext@ietf.org

Other actions: View Errata  |  Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC 6891


Abstract

The Domain Name System's wire protocol includes a number of fixed fields whose range has been or soon will be exhausted and does not allow requestors to advertise their capabilities to responders. This document describes backward-compatible mechanisms for allowing the protocol to grow.

This document updates the Extension Mechanisms for DNS (EDNS(0)) specification (and obsoletes RFC 2671) based on feedback from deployment experience in several implementations. It also obsoletes RFC 2673 ("Binary Labels in the Domain Name System") and adds considerations on the use of extended labels in the DNS.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.




Advanced Search