Use of /127 Prefix Length Between Routers Considered Harmful, September 2003
- Canonical URL:
- File formats:
- HISTORIC (changed from INFORMATIONAL)
- Obsoleted by:
- RFC 6547
- P. Savola
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 4844.