Throw me a IPv6 bone (sort of was IPv6 ignorance)

joel jaeggli joelja at
Fri Sep 21 14:57:50 UTC 2012

On 9/21/12 6:40 AM, Jeroen Massar wrote:
> On 2012-09-21 15:31 , 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?
>> 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?
>> 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.
>> What is current best practice?
> The IETF BCP is to deploy Dual Stack, thus both IPv4 and IPv6 at the
> same time.
That's likely to be congruent with the expectations of residential 
customers but it's not the sole model we've seen, at some point IPv4 
backward compatibility plays second fiddle to your ipv6 deployment.

the alternatives do get discussed, e.g.
> When that is not possible, as you ran out of IPv4 addresses, you should
> look at Dual Stack Lite (DS Lite) eg as supplied by ISC's AFTR and other
> such implementations.
> Depending on your business model you can of course also stick everybody
> behind a huge NAT or require them to use HTTP proxies to get to the
> Internet as most people define it...
> Do note that if you are asking any of these questions today you are
> years late in reading up and you missed your chance to be prepared for
> this in all kinds of ways.
> Greets,
>   Jeroen

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