Default Address Selection for Internet Protocol version 6 (IPv6)

This document describes two algorithms, for source address selection and for destination address selection. The algorithms specify default behavior for all Internet Protocol version 6 (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 context, including an optional mechanism for allowing administrators to provide policy that can override the default behavior. In dual stack implementations, the destination address selection algorithm can consider both IPv4 and IPv6 addresses - depending on the available source addresses, the algorithm might prefer IPv6 addresses over IPv4 addresses, or vice-versa.

All IPv6 nodes, including both hosts and routers, must implement default address selection as defined in this specification.


Publisher  Internet Society
Copyright © by the Internet Society. Copyright and Reprint Permissions: The Internet Society owns the copyrights for these publications. You may freely reproduce all or part of any paper for noncommercial purposes if you credit the author(s), provide notice to the Internet Society, and cite the Internet Society as the copyright owner.


> Publications > Default Address Selection for Internet Protocol version 6 (IPv6)