I feel you are hitting bug. Config export failed for 4.3.6 while exporting config data to local disk. Check that the account you use has write access. Cisco recommends that you use the Cygwin SFTP Server on Windows
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...