[arin-ppml] About NAT-PT.... (Re: Fantasyland)

Alain Durand alain_durand at cable.comcast.com
Thu Aug 28 18:07:36 EDT 2008

On 8/28/08 5:45 PM, "bmanning at vacation.karoshi.com"
<bmanning at vacation.karoshi.com> wrote:

> clearly we have a ways to go to meet the first hurdle. As for NAT-PT,
> the IETF is still trying to settle on a standard.

I read a lot of fantasy about NAT-PT those days, like it is going to be the
silver bullet that will make this all problems go away...
NAT-PT is a v6 to v4 translator. Which mean, it only helps if your internal
network is... v6. If you have any device in there that cannot do IPv6 and
need to talk to the rest of the universe (think IP-webcam, gaming device,
windows box prior to vista, load balancer, IDS, firewall, IMS, xyz
server,.... NAT-PT is *not* a solution for you. Nor would be any of its
replacement candidates.

Dual-stack lite (see
http://tools.ietf.org/html/draft-durand-dual-stack-lite-00) might be a
better approach in that space. It is being standardized by IETF in the
softwire working group.

  - Alain.

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