Definitive Guide to IPv6 adoption

Owen DeLong owen at delong.com
Mon Oct 18 13:09:43 CDT 2010


On Oct 18, 2010, at 10:10 AM, Jack Bates wrote:

> On 10/18/2010 11:45 AM, Owen DeLong wrote:
>> 
>> More accurately... A /48 per customer end-site...
>> 
> 
> Define end0-site. Residential customers, for example, don't need more than a /56. More would just be obscene. Most small businesses don't need more than a /56 either, especially if you are breaking them up into different sites (versus assigning a /48 to customer and dividing that block up to different sites).
> 
> 
You are wrong. Residential customers should get /48s. /56s seemed like a good idea at the time, but, they aren't.
It's not just about counting subnets. There's also the issue of needing bits for self-defining hierarchical topologies.
8 bits isn't enough for that. 16 is.

Seriously... This isn't IPv4. The scarcity mentality is causing harm and driving decisions that will have a limiting
effect on innovation that is already in progress.

Owen





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