RFC 3627

Use of /127 Prefix Length Between Routers Considered Harmful, September 2003

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Status:
HISTORIC (changed from INFORMATIONAL)
Obsoleted by:
RFC 6547
Author:
P. Savola
Stream:
INDEPENDENT

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC3627

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Abstract

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.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.




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