Subject: [Hipsec] Re: Last Call: 'An IPv6 Prefix for Overlay Routable Cryptographic Hash Identifiers (ORCHID)' to Experimental RFC (draft-laganier-ipv6-khi)

From: Jari Arkko <[email-masked]>
Date: Mon, 30 Oct 2006 00:38:18 +0200

We are last calling this document for the second time, for
two reasons. The first reason is to make sure that the
last call has been circulated widely enough in the
community.

The second reason is that we want to call the attention
of the IETF community on the specific issue of using
IPv6 addresses as identifiers in this manner. To summarize
the background, the document suggests the allocation
of a temporary experimental block out of the IPv6
address space for the purposes of easing experiments
that deal with identity-locator split. In particular the
HIP community wants this in order to be able to run
unmodified applications. The allocated address space
would be used to represent identifiers in the place
of addresses in the existing APIs. While the long-term plan is
to use new APIs that reflect the semantics appropriate
for identifiers, the ability to experiment without having
to upgrade all applications is important.

Such an approach is not without problems, however.
For instance, applications that deal with referrals
(e.g. one application passing an address to another
one) may end up "leaking" such identifiers to the
hosts that are not involved in an experiment. Since
the identifiers are not routable in the current Internet,
communications initiated towards such identifiers
will fail.

My own take on this issue is that there are
risks, but that the benefits are greater. In
particular, its clear that the identity-locator
split proposals need more experiments and
experience before we can consider them
for real. Making such experiments easy
is important. Also, IMHO, the topic is
sufficiently far in the domain of research
that the practical danger of the experiment
becoming a permanent problem is small.

But this is enough about my opinions.  Please
state your opinion -- in the interest of not
replicating this discussion on multiple lists,
send follow-ups to [email-masked].
> The IESG has received a request from an individual submitter to consider
> the following document:
>
> - 'An IPv6 Prefix for Overlay Routable Cryptographic Hash Identifiers 
>    (ORCHID) '
>    <draft-laganier-ipv6-khi-05.txt> as an Experimental RFC
>
> The IESG plans to make a decision in the next few weeks, and solicits
> final comments on this action.  Please send any comments to the
> [email-masked] or [email-masked] mailing lists by 2006-11-24.
>
> The file can be obtained via
> http://www.ietf.org/internet-drafts/draft-laganier-ipv6-khi-05.txt
>   

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