[ipv6-wg] IPv6 prefix delegation BCOP document - draft v.2 for review.

Hi,

On Thu, May 11, 2017 at 06:57:05AM +0200, Mikael Abrahamsson wrote:
> 4. In IPv4, it's not only perception of scarcity, there *is* scarcity.
> 
> 4. I think I did the calculation and if you have 8B /48s, you still have 
> only consumed around 1/10000th of the IPv6 space. I would use this instead 
> of "480 years". 2^33 is ~8B. 48-33 is 15. So /48 for 8B people uses a /15. 
> Take that down to one of the /3s we have, and it's a /12. 2^12 is 4096. So 
> One /48 per person on earth uses 1/4000th of the currently used /3. So 
> even with inefficient addressing this is not a problem.

The combination of "people will be using multiple ISPs simultaneously"
and "large networks will be hellishly inefficient wrt /48 usage due
to internal aggregation" (which RIR policies permit) this is not plenty
as it looks like.  A waste factor of 1000 in a network with many layers
of aggregation (BRAS, POP, City, Region, Country) might seem gross, but
we'll see that.  Look at the HD ratio tables...

> 4.2.3. Can't we use the "STRONGLY DISCOURAGED" to use less than /56 ?

Works for me :)

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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