metasystema.org
ObsoletedHISTORICINDEPENDENT stream

RFC 3627: Use of /127 Prefix Length Between Routers Considered Harmful

This RFC has been replaced. Do not implement against it for new work — it was formally obsoleted by RFC 6547.

Current version: RFC 6547 — RFC 3627 to Historic Status

In plain English — editorial summary, not part of the RFC

In some cases, the operational decision may be to use IPv6 /127 prefix lengths, especially on point-to-point links between routers. Under certain situations, this may lead to one router claiming both addresses due to subnet-router anycast being implemented. This document discusses the issue and offers a couple of solutions to the problem; nevertheless, /127 should be avoided between two routers.

Document record

Document ID
RFC3627
Published
September 2003
Authors
P. Savola
Status
HISTORIC
Stream
INDEPENDENT
Area
—
Pages
6
Also known as
—
Obsoleted by:
RFC 6547

Topics

Referenced by

One later RFC formally updates or obsoletes part of this document.

Related documents

Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.

Also filed under

About this page

The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

Data sources · Editorial policy · Report a correction · What is an RFC?

canonical URL: /rfc/3627-use-of-127-prefix-length-between-routers-considered-harmful