fast_ipsec and ipv6 : next step

Sorry my last mail was not complet and it seems to be a bit
rude. Please
excuse me.

Can someone can review the proposed change and give me this
advice about
this change. Is it acceptable for the common patch code ?
Any drawbacks ?
...

For information, the goal is here to have two functions for
ipv6 output,
one before ipsec processing, the secund after so I can write
something like
this :

      ip6_output
      ipsec6_process_packet
      ....
      ipsec_process_done
      ip6_output_cb
      ip6_output2

Take cares.


-- 
Degroote Arnaud
ENSEIRB Informatique
degrooteenseirb.fr