So you are basically looking into configuring 2 separate LAN and WAN connections. Both LANs will use their own WAN link to ISP also.
I am not that sure about this on the 8.2 (or lower) software level but have tested this on 8.4 - 9.1 software levels. Then again this is not officially supported by Cisco so you would never know if it suddenly stopped working.
Generally Cisco ASAs support having 2 ISP links but only 1 of them would be active at one given time.
To have 2 different LAN networks use their own WAN link requires special NAT configurations to accomplish that.
I have not tested or am not sure if there is really a way to accomplish this in the software you are running.
I have only tested this 8.4 - 9.1 software levels which use a completely different NAT configuration format compared to your software level.
Generally the CIsco ASA only support ISP failover. So only one ISP active at any given time. Some people might use Routing along with NAT configurations to enabled the use of both ISP but its not an officially supported setup.
On the newer softwares its easier to accomplish this with the NAT and that is the only thing I have tested.
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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...