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Re: Last Call: 'Teredo: Tunneling IPv6 over UDP through NATs' to Proposed Standard

2004-09-27 08:24:29
On Mon, 2004-09-27 at 16:53, Paul Hoffman / VPNC wrote:
At 12:27 PM +0200 9/27/04, Francis Dupont wrote:
 - I don't believe the protocol works with NATs using global addresses
   on both sides (yes, this is a stupid way to use NATs but one can say
   that using NATs is already stupid :-)

If you mean "non-private" on both sides, there is a very good reason 
for such NATs (well, if you believe that there is any reason for 
NATs). You have a Class C from your ISP and have hard-wired values in 
dozens of boxes, have gotten certificates for some of the IP 
addresses, have hard-wired the IP address in other places, and so on. 
One day they call and say "we've changed your IP range just because 
we can". Tossing everything behind a NAT using the old addresses 
keeps everything working until you can handle the transition.

--Paul Hoffman, Director
--VPN Consortium

As a "Director" (of what that may be) you probably also know of these
papers called 'contracts'. Thus make sure you have that sort of stuff in
your contract. There was a couple of months ago even some weird company
who abused their network and then got disconnected and almost got the
court to let them keep their addresses... Not a technical issue and thus
irrelevant.

Greets,
 Jeroen

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