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Re: [RRG] Trying to find a path forwards



Ran, are you assuming an architectural change will require host
changes?  If not, I don't see why this matters.  The "jack-up"
approach relieves the need for big changes to IP.

Excerpts from Randall Atkinson at 02:14:47 -0700 on Wed 26 Mar 2008:
> It is highly unlikely that this RG will be able to cause any
> architectural change to the deployed IPv4 Internet.  There are
> too many of everything (routers, hosts, embedded systems of
> various sorts), and too much entropy in the IPv4 routing allocations
> (probably more PI than PA, though I haven't counted recently)
> to really make a substantial architectural change.  Sundry hacks
> might or might not be deployable, but the kinds of architectural
> change indicated in the RG charter are unlikly to happen for the
> IPv4 Internet (and are certainly very hard in absolute terms).
> 
> By contrast, the IPv6 Internet still has relatively limited deployment
> and relatively little routing allocation entropy.  The overwhelming
> majority of IPv6 hosts and routers are still young enough that
> upgrading either or both is not impractical.  Further, it is still possible,
> just, that if the RG were to focus and execute on its charter,
> and the IETF then ran with the input in a focused way, that some
> meaningful architectural change to the IPv6 world could happen
> BEFORE most of the Internet starts using IPv6 in a production way
> (mindful, for example, of the Comcast presentations about the need
> for IPv4::IPv6 NAT so that IPv6 only users can access IPv4 only content).
> I'm not sure, perhaps some consider the SHIM6 work to be sufficient
> in this regard, but clearly many do not consider the SHIM6 work
> to be a solution to these issues.  Presumably the powers that
> wrote the current RG charter do not perceive SHIM6 as a solution
> to the concerns listed in the charter.

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