On 12/12/2012 21:32, Ole Trøan wrote:
>> I think the only way to make progress on this question is to
>> discuss two points in a much more general way:
>>
>> 1. Does the current mapping of the "u" bit in the modified EUI format have
>> any value?
>>
>> 2. Does the current mapping of the "g" bit in the modified EUI format have
>> any value?
>>
>> If the answer to these questions is "no" we could start by saying that they
>> are *not* mapped from an IEEE EUI into a modified EUI, and then consider
>> how to use them in future.
>
> or we could consider the interface-id as 64 bits without any implied meaning
> attached to
> any of the bits.
We could certainly discuss that, but first I'd like to understand if the mapping
of the u/g bits into layer 3 addresses has any value in practice.
I believe it's true that the u bit has no value for ILNP. At one point there was
a thought that it had potential value for 8+8. Maybe Ran Atkinson can comment.
Does the g bit have any value in multicast? (Obviously it has value in the MAC
address,
but here we are talking about the IP address.)
Brian
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