Name: draft-ietf-ipv6-privacy-addrs-v2-01
Title: Privacy Extensions for Stateless Address Autoconfiguration in IPv6
State: Active
Authors: Thomas Narten
Group: IP Version 6 Working Group (ipv6)
Date: 2004-10-25
Nodes use IPv6 stateless address autoconfiguration to generate addresses
without the necessity of a Dynamic Host Configuration Protocol (DHCP)
server. Addresses are formed by combining network prefixes with an
interface identifier. On interfaces that contain embedded IEEE Identifiers,
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.
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