NAT is necessary because you're going from a lower security level interface to a higher one. If you don't configure NAT, you will have no connections and you will receive some logs that state "no translation group found".
I am sorry to ask again. But it is not clear to me :)
I know that if you are going from a lower security level to a higher security level , u need an access-list that explicitly permit that traffic and not a NAT translation. So my question is: U need both an access-list and a NAT ?
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...