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RFC 4941: Privacy Extensions for Stateless Address Autoconfiguration in IPv6

This RFC has been replaced. Do not implement against it for new work — it was formally obsoleted by RFC 8981.

Current document in this lineage: RFC 8981 — Temporary Address Extensions for Stateless Address Autoconfiguration in IPv6

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

Nodes use IPv6 stateless address autoconfiguration to generate addresses using a combination of locally available information and information advertised by routers. Addresses are formed by combining network prefixes with an interface identifier. On an interface that contains an embedded IEEE Identifier, the interface identifier is typically derived from it. On other interface types, the interface identifier is generated through other means, for example, via random number generation. This document describes an extension to IPv6 stateless address autoconfiguration for interfaces whose interface identifier is derived from an IEEE identifier. Use of the extension causes nodes to generate global scope addresses from interface identifiers that change over time, even in cases where the interface contains an embedded IEEE identifier. Changing the interface identifier (and the global scope addresses generated from it) over time makes it more difficult for eavesdroppers and other information collectors to identify when different addresses used in different transactions actually correspond to the same node. [STANDARDS-TRACK]

Document record

Document ID
RFC4941
Published
September 2007
Authors
T. Narten; R. Draves; S. Krishnan
Status
DRAFT STANDARD
Stream
IETF
Area
int
Pages
23
Also known as
—
Obsoletes:
RFC 3041
Obsoleted by:
RFC 8981

Topics

Standards lineage

This document is one revision in a chain of 3 RFCs, each formally replacing the one before it.

  1. RFC 3041 (2001)
  2. RFC 4941 (2007)
  3. RFC 8981 (2021) ✓

Read the full history of Temporary Address Extensions for Stateless Address Autoconfiguration in IPv6 →

Referenced by

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

Related documents

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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/4941-privacy-extensions-for-stateless-address-autoconfiguration-in-ipv6