Current Consensus on IPv6 Customer Allocation Size

Mikael Abrahamsson swmike at
Thu Aug 2 12:56:16 CEST 2012

On Thu, 2 Aug 2012, Gert Doering wrote:

> Hi,
> On Thu, Aug 02, 2012 at 12:31:19PM +0200, Mikael Abrahamsson wrote:
>> On Thu, 2 Aug 2012, Mark Blackman wrote:
>>> They're going to need a much bigger IPv6 allocation to give all ~2^26
>>> customers a /48 allocation, and they can't even quite give them all a
>>> /56 out of their current allocation.
>> It gets interesting if every mobile device should get a /48 as well, then
>> we're going to be spending a /14 on this (2^34 is 16G, 48-34=14.
> Something tells me that you're not having 16 *billion* customers, but
> more like 16 *million*.  Right?  That's 2^24, plus some :-) -> /24-ish
> needed to give out /48s

Well, I intended "the world as a whole", with each person having 1-2 
mobile devices. I was unclear. I tried to make a point that this is 
definitely possible to hand out /48 to everything, but are RIRs ready for 
such requests?

Mikael Abrahamsson    email: swmike at

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