I agree with Jari, having subsets doesn't seem like a good idea. Most use cases for specific deployments seem to be very limited, and arguments can be made as to why a more general purpose IPv6 would be a better choice. John - original message - Subject: Re: IPv6 Subsets? From: Jari Arkko <jari.arkko@xxxxxxxxx> Date: 04/19/2006 8:15 am RFC 4294 contains the most recent summary information on what nodes should support from IPv6. The detailed MUST/SHOULD/MAY requirements are in the IPv6 specifications themselves. (RFC 3316 that Juha pointed to is a discussion of issues related to running IPv6 over cellular interfaces. The type of the interface that you are using does impact what you need to support, at least in terms of what IPv6 over Foo you need to support, what configuration options make sense, etc.) --Jari _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf