Re: IPv6 Home Use to stimulate deployment over IPv4-NAT

["JORDI PALET MARTINEZ" <jordi.palet@consulintel.es>]

Paul,

My experience is that if the NAT box is forwarding the proto-41, then is forwarded just as any other ICMP, UDP, or TCP, so is
reaching the appropriate host in the private network. That means that several tunnels can be setup w/o any problem.

Of course, the "manager" of the NAT box can setup a single tunnel for all proto-41 packets, but this is something out of our
control, specially in an hotel.

Regards,
Jordi

----- Original Message -----
From: "Paul Timmins" <paul@timmins.net>
To: "Erik Nordmark" <Erik.Nordmark@sun.com>
Cc: "Jeroen Massar" <jeroen@unfix.org>; "'Bound, Jim'" <Jim.Bound@hp.com>; "'JORDI PALET MARTINEZ'" <jordi.palet@consulintel.es>;
<v6ops@ops.ietf.org>; "'Alain Durand'" <Alain.Durand@sun.com>; <alh-ietf@tndh.net>
Sent: Friday, February 21, 2003 4:56 PM
Subject: RE: IPv6 Home Use to stimulate deployment over IPv4-NAT


> On Fri, 2003-02-21 at 10:29, Erik Nordmark wrote:
> > That's nice for those that have control of the NAT box.
> > The Telco that provides me service at home provides me with a NAT box
> > that they control - and they are uninterested in doing anything special.
> > I can't bypass/replace the NAT box because it speaks some odd and probably
> > proprietary stuff on the other side (it's an ISDN line).
> >
> > So I prefer solutions that don't have to rely on configuration in
> > the NAT box yet are simpler than Teredo.
>
> I agree here as well. I've seen -alot- of firewalls that either block,
> or don't statefully forward proto-41. Even if they did, that limits IPv6
> to one end user behind the NAT. If I was using this at a Mariott for
> example, they NAT the users of their in room ethernet. I'd be
> disappointed if someone else was using v6 tunneling in the hotel,
> because it means I couldn't (Assuming they forward proto-41 to begin
> with). With UDP tunneling, we could both have our own tunnels. I think a
> limitation on how many machines behind a NAT can have a tunnel would
> slow transition in places like this, because if I were offering
> enterprise services over v6, and had my employees tunneling back to the
> office, I'd be pretty upset if they couldn't get their job done because
> another employee (or just another user, depending on the proto-41
> forwarding implementation) has a tunnel open at the hotel at the same
> time.
>
> My 0.02.
> -Paul
>
> --
> Paul Timmins
> paul@timmins.net / http://www.timmins.net/
> H: 313-586-9514 / C: 248-379-7826 / DC: 130*116*24495
> AIM: noweb4u / Callsign: KC8QAY
>

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