On 29 Apr 2013, at 20:39, Ray Hunter <[email protected]> wrote:

> 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).

As per 
http://tools.ietf.org/html/draft-chown-6man-tokenised-ipv6-identifiers-02 ?

Tim
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