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.
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