I have several new ASA-5520 boxes. All are configured with version 7.06 (Cisco recomendation) and in active/standby configuration.
The problem is that the ACLs seem to disapear. For example; I have an outside access list that have about 20 lines. Every once in a while the ACL will start blocking traffic that is permitted by the ACL. When I do a 'sh access-list outside' it says that there are only two elements. They are there when I look at the running config. If I wait a while they start to work again and show up as 'active elements' again. I can force a failover and failback to fix it or restart the firewall. I will open a TAC case on Monday. I was hoping that maybe someone has seen this and has a quick solution.
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...