Christian Huitema wrote:
>> The "problem" here is that don't have all the names/IDs we'd like. For 
>> example, using the MAC address as the Interface_ID would do for this 
>> purpose... but the the IPv6 address is tied to the MAC address, and would 
>> change upon replacement of the NIC (which is generally undesirable)...
>
> Undesirable by whom? For a laptop, for example, the most likely cause of a 
> MAC address change is that the user/owner used an administrative command to 
> change it, probably in an attempt at getting privacy. Keeping the same IID 
> would defeat the purpose.
>
> On the other hand, if I am managing a big server, I would like to retain the 
> same IPv6 addresses to avoid disrupting service. But then, if I want a fixed 
> address, I would probably ensure that by configuring a fixed address, not by 
> relying on a side effect of automatic address configuration.
>
> -- Christian Huitema
>
>
>
Right. But a bad side effect of manually configuring fixed addresses is
that you derail all of the good work around renumbering.

It might prove operationally useful to be able to configure a static
IID, but still continue to use of a variable network prefix (derived
from RA).

regards,
RayH
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