On Apr 7, 2013, at 18:21 , Rajiv Asati (rajiva) <raj...@cisco.com> wrote:

> Dual-stack in the home networks will stay with us for a long time (beyond 
> 2020!) until v4-only user devices and v4-only apps get refreshed.

I disagree. I think that v4-only apps and devices will get relegated to being 
connected through v4-v6 adapter appliances until they are fixed.

IPv4 is simply going to become far too expensive to maintain to be able to 
deliver it for residential pricing.

> Of course, this doesn't mean that the ISP access needs to stay dual-stack, 
> thanks to MAP, 464XLAT etc.
> 

Right... Those are some of the ways that maintaining IPv4 will become so 
expensive. ;-)

Owen


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