Hi Brian,

I wonder what you think of what I answered to James on another discussion 
thread.

Regards,
RD
 

Début du message réexpédié :

> De : Rémi Després <remi.desp...@free.fr>
> Date : 21 avril 2010 10:43:55 HAEC
> À : james woodyatt <j...@apple.com>
> Cc : 6man 6man <ipv6@ietf.org>
> Objet : Rép : Draft-krishnan-ipv6-exthdr-08 to become asap a 6man WG draft ?
> 
> ...
>> In general, only some IPv6 packets have 5-tuples, and of those, only a 
>> subset can have 5-tuples that packet analyzers can extract, i.e. the rest 
>> are encapsulated in ESP or a moral equivalent (and ESP packets have 
>> 4-tuples).
>> 
>> Hosts should set flow labels.  
> 
> Agreed.
> 
> This should be IMHO the conclusion of the current discussion on flow labels, 
> BUT provided hosts are explicitly permitted to set flow-label values 
> statelessly for each datagram, with a hash of their 5-tuples.
> (RFC 3697 says "To avoid accidental Flow Label value reuse, the source node 
> SHOULD select new Flow Label values in a well-defined sequence", which 
> privileges flow-label assignments that are stateful per connection, a choice 
> significantly more complex than needed.)
> 

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