Learning the IPv6 Prefix of a Network's IPv6/IPv4 Translator

Document Type Expired Internet-Draft (individual)
Last updated 2009-10-26
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Some IPv6 applications obtain IPv4 address literals and want to communicate with those IPv4 hosts through an IPv6/IPv4 translator. The IPv6 application can send an IPv6 packet through the translator if it knows the IPv6 prefix of the IPv6/IPv4 translator. In many IPv6/IPv4 translation deployments, that IPv6 prefix is not fixed; rather, the prefix is chosen by the network operator. This specification provides three methods for a host to learn the IPv6 prefix of its IPv6/IPv4 translator. Unicast, any-source multicast (ASM), and source-specific multicast (SSM) are supported.


Dan Wing (dwing@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)