RE: Persistent or opportunistic IDs

["marcelo bagnulo" <mbagnulo@ing.uc3m.es>]

Hi Iljitsch,

> De: owner-multi6@ops.ietf.org [mailto:owner-multi6@ops.ietf.org]En
> nombre de Iljitsch van Beijnum
>
> Yesterday at the RIPE meeting Geoff talked about the difference between
> doing address agility using long-lived identifiers vs pragmatic,
> short-lived identifiers. This is indeed a useful way to classify multi6
> solutions. Pragmatic identifiers would generally be regular (locator)
> IP address.

I am not sure i understand this clasification.
Why do you consider that pragmatic identifiers - locators are short lived
when they are used as identifiers? I mean, i consider that the HoA is a
stable identifier of the mobile node, but it is short lived as a locator.

I think i can see the difference between a stable identifier and an
ephemeral identifier, such as the ones used in WIMP, and i think that this
is usefull distinction.

Regards, marcelo


> However, selecting such a pragmatic approach doesn't
> necessarily close the door on persistent identifiers, as it's possible
> to "hide" such a persistent identifier in the lower 64 bits of a PA
> IPv6 address. This is basically what I propose in my crypto-based host
> identifier draft.
>
> Two questions:
>
> - do we agree that going the pragmatic route first and adding
> persistent identifiers later is indeed possible?
> - if this is the case, does this mean such is also the preferable way
> forward?
>
>