On 09/03/2009, at 1:44 PM, Jasper Bryant-Greene wrote:
How is that different from normal IP routing? The other end always decides which way to send packets back to you, and in the event that your customer is multihomed, the return path might not even transit your AS.
I control my outbound and inbound routing. People only send packets via routes I advertise and I can show a contractual relationship between me and my upstream or peer, my upstream and theirs or their peer and then to the far end etc.
With using 6to4 the downside is that whilst I may have my own gateway, the FAR end could be using a 3rd party 6to4 gateway. This means that the return packets traverse links for which I have no contractual relationship.
I guess in some way I'm agreeing with Joe that everyone SHOULD run their own, especially if they offer up content over IPv6. (I wonder if Google do with ipv6.google.com?).