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STD 75
RFC 6891
Title: Extension Mechanisms for DNS (EDNS(0))
Author: J. Damas,
M. Graff,
P. Vixie
Status: Standards Track
Stream: IETF
Date: April 2013
Mailbox: joao@bondis.org,
explorer@flame.org,
vixie@isc.org
Pages: 16
Characters: 32856
Obsoletes: RFC 2671, RFC 2673
See Also: STD 75
I-D Tag: draft-ietf-dnsext-rfc2671bis-edns0-10.txt
URL: http://www.rfc-editor.org/rfc/rfc6891.txt
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.
This document is a product of the DNS Extensions Working Group of the IETF.
This is now an Internet Standard.
STANDARDS TRACK: This document specifies an Internet standards track
protocol for the Internet community,and requests discussion and suggestions
for improvements. Please refer to the current edition of the Internet
Official Protocol Standards (STD 1) for the standardization state and
status of this protocol. Distribution of this memo is unlimited.
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