[governance] IPv[4,6, 4/6] was IGF delhi format

[Suresh Ramasubramanian]

Milton L Mueller [27/02/08 06:32 -0500]:
>So, from my point of view the issue is not the abandonment of v4, but
>getting stuck in it forever.

And yes you will find it sticking around forever. Several providers and
sites will have zero incentive to ditch v4 and move to v6. Several legacy
applications may only run on systems that run v4, not v6.  etc.

Adoption can't be driven by fiat. It can be - and will be - driven by
market needs.

Consider these situations -

1. Most mobile phone providers also provide IP connectivity. If a new
cellular carrier starts up, and signs up several hundred thousand to a few
million users, they can either assign private IP space and NAT their users.
Or - as they distribute phones and firmware, and there's lots of v6 capable
mobile phones out there - they can simply get a /48 or two and satisfy
their needs (assuming one IP per phone).  There is enough 6 to 4
connectivity, and the usual plethora of mobile apps and mcommerce providers
will migrate en masse to v6 if enough providers do this. 

2. Similarly DSL providers can do this - after all, IP addressing is
handled at the CPE level (DSL router etc) so a router can hand out either
v4 or v6 IPs to connected devices, and assign a public v6 IP, plus provide
6 to 4 connectivity. Or maybe also dual stack (though they can incentivize
people to move to v6 by providing natted v4 access and public v6 IPs)

Again, a /48 or two will suffice assuming /128 per CPE - Or hell, they can
get far larger allocations without breaking into a sweat (customer end
sites can get /48 or /64 and bind hundreds of thousands of v6 IPs on a
single PC right now as you are aware).

If you want this as a governance issue, remember how people used to get
"class C" IP space for the asking way back when, and consider that while
there's more v6 IPs than there are probably molecules on earth, there's
always the possibility of interplanetary internet out there as Vint Cerf is
fond of pointing out .. assuming you want to hold future IGFs on Mars with
space aliens and argue that earthlings hogged all of v6.

	srs
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