not must identical but better, When this lifetime expires, the IPsec peers renegotiate IKE phase 1
Many people choose to leave the IKE SA lifetime at the default value of 86400. It is worth noting, however, that the longer the lifetime, the less secure the SA is. The SA is less secure with a longer lifetime because with a longer lifetime an attacker has more time to collect encrypted traffic and subject it to cryptanalysis (attempt to recover the plaintext). However, a shorter IKE lifetime causes IPsec peers to have to renegotiate IKE more often
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...