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

Jeroen Massar jeroen at
Fri Sep 21 13:40:48 UTC 2012

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.

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.


More information about the NANOG mailing list