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RFC 7136: Significance of IPv6 Interface Identifiers

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

The IPv6 addressing architecture includes a unicast interface identifier that is used in the creation of many IPv6 addresses. Interface identifiers are formed by a variety of methods. This document clarifies that the bits in an interface identifier have no meaning and that the entire identifier should be treated as an opaque value. In particular, RFC 4291 defines a method by which the Universal and Group bits of an IEEE link-layer address are mapped into an IPv6 unicast interface identifier. This document clarifies that those two bits are significant only in the process of deriving interface identifiers from an IEEE link-layer address, and it updates RFC 4291 accordingly.

Document record

Document ID
RFC7136
Published
February 2014
Authors
B. Carpenter; S. Jiang
Status
PROPOSED STANDARD
Stream
IETF
Area
int
Pages
10
Also known as
—
Updates:
RFC 4291

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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.

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canonical URL: /rfc/7136-significance-of-ipv6-interface-identifiers