On Sat, 2012-04-14 at 14:05 +0200, Fernando Gont wrote:
> Shouldn't it be specified with RFC 2119 language?

The first para just described intent. The others used 2119 language.

> Yep. I think it would be better to have all IIDs generated with the
> algorithm.

It may be better, but it is a change to a massively widely-implemented
mechanism. I suggest therefore

   "IPv6 implementations conforming to this specification MUST NOT
    use Modified-IEEE format interface identifiers [see 4291 Appendix
    A] for any purpose EXCEPT THAT link local addresses MAY (but SHOULD
    NOT) be generated using Modified-IEEE format interface identifiers.

> Sorry, what you put in the key would be used for setting the IID??

Yep - if I set the flag and put "::53" in the key, then the address
generated will be prefix::53. But this is just an off-topic idea and not
essential to your draft.

> What's the use case you have in mind?

Don't have one :-)

Regards, K.

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