On Sep 21, 2012, at 9:31 AM, Mark Radabaugh wrote:
> The part of IPv6 that I am unclear on and have not found much documentation 
> on is how to run IPv6 only to end users.   Anyone care to point me in the 
> right direction?

This all depends on how your manage your last-mile and terminate users now.  I 
have a friend with a local WISP here and he gives everyone a /24 out of 
172.16/12 and dumps them through his load-balancer for his few connections.  
His "CGN" box seems to handle this fine.

> Can we assign IPv6 only to end users?  What software/equipment do we need in 
> place as a ISP to ensure these customers can reach IPv4 only hosts?

I would say you want to do dual-stack, but shift the users that don't *need* 
public IPs into 1918 space and deliver v6 native as feasible.  If you have a 
server lan, you can do this with SLAAC, but to get the other information to 
your hosts, either via RA's and otherwise, it's just becoming easier to do.

PPPo* you can get IPv6 IPCP up and going, but the device has to support it.

> The Interwebs are full of advice on setting up IPv6 tunnels for your house 
> (nice but...).  There is lots of really old documentation out there for IPv6 
> mechanisms that are depreciated or didn't fly.

ASR1K and other devices can serve as nat64.. (I think Juniper does the same, 
but I don't recall their roadmap/product set).  I'm sure you can do it with a 
Linux or *BSD box as well.

> What is current best practice?

I would say there is none as it largely depends on how you terminate that 
transport, and there are a few ways one can do that.

Hope this helps,

- Jared

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