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Re: CGA-based HoA generation for MIP6 (was RE: [Mipshop] Review of draft-arkko-mipshop-cga-cba-04)

Jari Arkko <jari.arkko@piuha.net> Mon, 14 August 2006 22:48 UTC

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Date: Mon, 14 Aug 2006 23:12:36 +0300
From: Jari Arkko <jari.arkko@piuha.net>
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To: "Narayanan, Vidya" <vidyan@qualcomm.com>
Subject: Re: CGA-based HoA generation for MIP6 (was RE: [Mipshop] Review of draft-arkko-mipshop-cga-cba-04)
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Narayanan, Vidya wrote:

>One question regarding CGA-based HoAs - don't we need to specify how
>CGA-based HoAs impact home registrations? For instance, the preferred
>HoA bootstrapping mechanism today is using IKEv2. I'd imagine that we
>will need to specify how a CGA-based HoA is generated after MPD and how
>that binding is registered with the HA (i.e., does it need to be signed?
>Does the HA also need to know if the HoA has been generated using
>CGAs?). 
>  
>
Good question! I do not recall if this has been analyzed
during the design of cga-cba draft. But taking a look at
draft-ietf-mip6-ikev2-ipsec, it does allow the mobile node
to suggest what address to use. I'm not sure the draft
says anything about discovering the prefix first before
suggesting an address (which would be needed for CGAs),
but this seems in general possible in IKEv2. Vijay, are
you listening?

--Jari


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