Biggest mistake for IPv6: It's not backwards compatible, developers admit

[John Payne]

On Mar 31, 2009, at 1:09 PM, Fred Baker wrote:

>
> On Mar 31, 2009, at 9:52 AM, John Payne wrote:
>
>> However, neither NAT, nor shim6, nor PA (non-deagg'd) deal well  
>> with the server-centric sites when one of the links is down.   
>> Waiting for TCP timeouts on the first SYN isn't an acceptable model.
>
> OK, so you're looking for fast re-route, and that primarily for  
> servers. I said there was a case for PI, and that is one  
> summarization of the case.
>
> That doesn't mean that all sites everywhere should have PI  
> addresses. How many servers are in hosting facilities? It means that  
> the servers need them.

TCP timeouts on the SYN/ACK are also unacceptable :)    That's a  
little easier to control with NAT... not so much with the other  
options though....