Protocol Action: Default Address Selection for IPv6 to Proposed Standard
The IESG <iesg-secretary@ietf.org> Thu, 15 August 2002 18:26 UTC
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From: The IESG <iesg-secretary@ietf.org>
Subject: Protocol Action: Default Address Selection for IPv6 to Proposed Standard
Date: Thu, 15 Aug 2002 14:12:43 -0400
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The IESG has approved the Internet-Draft 'Default Address Selection for IPv6' <draft-ietf-ipv6-default-addr-select-09.txt> as a Proposed Standard. This document is the product of the IP Version 6 Working Group. The IESG contact persons are Erik Nordmark and Thomas Narten. Technical Summary In IPv6, a node may have multiple addresses. Consequently, when initiating a communication with a destination, there is a choice as to which destination address to use (if the destination has multiple addresses listed in the DNS) as well as to which source address to use (if the initiating node has multiple addresses). This document describes two algorithms, for source address selection and for destination address selection. The algorithms specify default behavior for all IPv6 implementations. They do not override choices made by applications or upper-layer protocols, nor do they preclude the development of more advanced mechanisms for address selection. The two algorithms share a common framework, including an optional mechanism for allowing administrators to provide policy that can override the default behavior. In dual stack implementations, the framework allows the destination address selection algorithm to consider both IPv4 and IPv6 addresses - depending on the available source addresses, the algorithm might prefer IPv6 addresses over IPv4 addresses, or vice-versa. Working Group Summary There was consenus in the WG for this document and no issues were raised during the Last Call. Protocol Quality This document has been reviewed for the IESG by Thomas Narten.