[arin-discuss] IPv6 End User Assignments

[Mike Berger]

My experience with U.S. ISP's is that "reasonable" doesn't enter into 
the equation.  They like to charge a premium for anything beyond the 
most basic service.  When you consider how ISP's connect their clients, 
they could certainly offer single addresses to their customers.  We have 
fiber from two providers.  A couple of years ago we'd be part of the 
Sonet ring and de-mux on site.  Now we just have a fiber connection to a 
transceiver that runs from their switch.

The original question wasn't about what was reasonable, but what U.S. 
ISP's would most likely do.  They're not the same thing.

Eric Windisch wrote:
>
> On May 6, 2009, at 11:05 AM, Mike Berger wrote:
>
>> I would expect a North American ISP to allocate a single IPv6 address
>> and charge a huge fee for a subnet for their residential ADSL customers.
>
> The minimum reasonable size would be a /64 (a single address would be 
> a /128).  It should be noted that a /64 doesn't entirely exclude 
> customers from subnetting, but it will cause problems with router 
> advertisement and other features.  I don't think that anyone with 
> experience deploying IPv6 would argue for subnets smaller than a /64, 
> so its not worth discussing further.
>