Re: about Wedgelayer 3.5 / Fat IP approaches

[Erik Nordmark <Erik.Nordmark@sun.com>]

> I really don't want to start a discussion here about cryptographic
> strength, but my objection to CGAs in the multi6 context is that they
> include the /48 prefix in the hash, and that is variable in multi6,
> which means that the host ID changes when you change prefix. I think
> that's an unfortunate property because it eliminates some possible
> tricks in the ID/locator split.

Which reminds me about one part I overlooked in thinking about cb64 where
the IID is different per prefix: if we do this it isn't any longer possible
to have router rewrite the source locator, because a different prefix
would imply that the suffix needs to be different.

So we need to add that to the list of things to trade off.

  Erik