I have the exact same problem here and after doing some heavy WebVPN Citrix and aaa common debugging on the ASA, I can see that the authentication goes just fine through and ASA considers the connection to be accepted, but after that the connection is just dropped like said here earlier.
Login to the FXOS chassis manager.
Direct your browser to https://hostname/, and log-in using the user-name and password.
Go to Help > About and check the current version:
Check the current version availa...
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...