IPv4 to IPv6

[Jon Radel]

On 6/2/17 10:26, James B. Byrne via freebsd-questions wrote:
> We are beginning the process of transitioning to IPv6.  I have read a
> great deal respecting the difficulty of moving from IPv4 to IPv6 and
> maintaining general Internet connectivity.  If any reading this have
> gone through the process upon which we are embarking then I would be
> grateful if you share your experience. Particularly any 'gotchas' that
> cropped up.
>
> We will be using FreeBSD-11 as the platform for our Internet
> connectivity. The main services we provide publicly are SMTP and DNS. 
> We will maintain IPv4 addresses for these together with IPv6.
>
>
Do you really plan to remove IPv4 from everything other than your SMTP
and DNS servers?  If so, how will your users [assuming you have such]
reach resources on the IPv4 Internet?  Or have I misunderstood?

An orderly migration to being dual-stacked on everything would probably
be a lot less painful than what I think you're planning.  While there
are possible mechanisms for an IPv6-only client to reach resources on
the IPv4 Internet, I'm unclear on the benefits of bothering with such an
architecture.

-- 
--Jon Radel
jon at radel.com


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