Problem between 2.7 and 2.8 ipsec tunnel

["Nicolas Prochazka" <nicolas@sansistor.com>]

Hi,
For one years we use ipsec tunnel (manual keying) between two openbsd 2.7 
box without problem.
Now I update one of the box with an  openbsd 2.8.
After change our ipsec script (read new man vpn) , nothing run.
Is it possible to use 2.7 and 2.8 to create ipsec tunnel. 

(The changes to 2.8 ipsec manual script) are :
 -require -in -src $A_EXTERNAL_IP and  -require -out -src $A_EXTERNAL_IP
at the good place in the flow and delele all -spi in flow making. 

So What's wrong (i recall that it's working before) 

Thanks a lot
Nicolas Prochazka