BCP 198, RFC 7608 on IPv6 Prefix Length Recommendation for Forwarding
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Subject: BCP 198, RFC 7608 on IPv6 Prefix Length Recommendation for Forwarding
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A new Request for Comments is now available in online RFC libraries.
BCP 198
RFC 7608
Title: IPv6 Prefix Length Recommendation for
Forwarding
Author: M. Boucadair, A. Petrescu,
F. Baker
Status: Best Current Practice
Stream: IETF
Date: July 2015
Mailbox: mohamed.boucadair@orange.com,
alexandre.petrescu@cea.fr,
fred@cisco.com
Pages: 6
Characters: 10818
See Also: BCP 198
I-D Tag: draft-ietf-v6ops-cidr-prefix-03.txt
URL: https://www.rfc-editor.org/info/rfc7608
DOI: http://dx.doi.org/10.17487/RFC7608
IPv6 prefix length, as in IPv4, is a parameter conveyed and used in
IPv6 routing and forwarding processes in accordance with the
Classless Inter-domain Routing (CIDR) architecture. The length of an
IPv6 prefix may be any number from zero to 128, although subnets
using stateless address autoconfiguration (SLAAC) for address
allocation conventionally use a /64 prefix. Hardware and software
implementations of routing and forwarding should therefore impose no
rules on prefix length, but implement longest-match-first on prefixes
of any valid length.
This document is a product of the IPv6 Operations Working Group of the IETF.
BCP: This document specifies an Internet Best Current Practices for the
Internet Community, and requests discussion and suggestions for
improvements. Distribution of this memo is unlimited.
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