XS4ALL Introduces native IPv6 for DSL customers

[Mark Smith]

On Fri, 27 Aug 2010 10:07:47 +0200
Daniel Roesen <dr at cluenet.de> wrote:

> On Fri, Aug 27, 2010 at 09:55:28AM +0200, Marco Hogewoning wrote:
> > > Unless you run out of /48s and have to go back to RIPE NCC to get more
> > > address space. And then you're judged on /56s, not /48s for efficiency.
> > 
> > No, you are judged on /56 equivalents....the /48 assignment is perfectly valid.
> 
> Sure it is, but it's a difference in the amount of customers you can
> support, isn't it?
> 
> With the old /48 HD ratio 0.80 policy, a /32 was to support a customer
> base of 52.429 before you qualified for additional address space. With
> the new /56 policy with HD ratio 0.94, RIPE NCC asks for 6.183.533
> customers before the /32 allocation is deemed efficiently used.
> 
> Is my understanding of the policy wrong?
> 

I don't think so. However, remember that /32 is the smallest size that
anybody can get, so the common size is likely to be quite a bit larger.
The cornershop ISP who only has a few thousand customers will be
assigned a minimum of a /32.

Regards,
Mark.