Dual stack IPv6 for IPv4 depletion

Karl Auer kauer at biplane.com.au
Thu Jul 9 02:49:17 UTC 2015


On Wed, 2015-07-08 at 21:03 -0500, Mike Hammett wrote:
> I wasn't aware that residential users had (intentionally) multiple
> layers of routing within the home. 

You, we, all of us have to stop using the present to limit the future.
What IS should not be used to define what SHOULD BE.

What people NOW HAVE in their homes should not be used to dictate to
them what they CAN HAVE in their homes, which is what you do when you
provide them only with non-globally-routable address space (IPv4 NAT),
or too few subnets (IPv6 /56) to name just two examples.
 
Multiple layers of routing might not be what is now in the home, but it
doesn't take that much imagination to envision a future where there are
hundreds, or even thousands of separate networks in the average home,
some permanent, some ephemeral, and quite possibly all requiring
end-to-end connectivity into the wider Internet. Taking into account
just a few current technologies (virtual machines, car networks,
personal networks, guest networks, entertainment systems) and
fast-forwarding just a few years it's easy to imagine tens of subnets
being needed - so it's not much of a leap to hundreds. And if we can
already dimly see a future where hundreds might be needed, history tells
us that there will probably be applications that need thousands.

Unless of course we decide now that we don't WANT that. Then we should
make it hard for it to happen by applying entirely arbitrary brakes like
"/48 sounds too big to me, let's make it 1/256th of that."

Regards, K.

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Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
http://twitter.com/kauer389

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