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Re: REVIEW NEEDED: draft-durand-v6ops-assisted-tunneling-requirements-00.txt
That's true if both hosts try to use the same Tunnel server.
But I also believe that when there are several host behind a NAT, or in the same LAN, is more interesting to use proto-41 or any other mechanism to provide a single prefix to all the LAN. It provides a lot of advantages.
It should not be very difficult, as part of the implementation of the tunneling protocol (TSP or whatever), detect this situation automatically and even configure one of the host as "router" for the rest of the network.
I'm trying to clarify this in the next release of my I-D.
Regards,
Jordi
----- Original Message -----
From: "Christian Huitema" <huitema@windows.microsoft.com>
To: "Alain Durand" <Alain.Durand@Sun.COM>; "Pekka Savola" <pekkas@netcore.fi>
Cc: <v6ops@ops.ietf.org>
Sent: Wednesday, May 05, 2004 3:26 AM
Subject: RE: REVIEW NEEDED: draft-durand-v6ops-assisted-tunneling-requirements-00.txt
> How widely is IP proto 41 forwarding deployed? If it is not much,
> I suppose that forcing an extra layer of encapsulation would
> not be that terrible... and also would allow for more than one
> tunnel to go through the NAT box.
> So, I do not think that detecting NAT proto 41 forwarding is
> an important requirement.
You have to be concerned with the case when there are two hosts doing
this behind the same NAT. At most one of them will get proto 41
connectivity. If one got it and a second tries, the first one will loose
it. The support issues are going to be interesting.
-- Christian Huitema
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