I have one computer where AnyConnect all of a sudden has stopped working. It connects through an ASA 5510. I can use a different machine over the same connection with the same AnyConnect Client and connect fine.
On the machine that does not work anymore it connects, but then I am not able to see anything actually behind the firewall it seems. I get an inital group of bytes received of 19847 and I receive 5 frames, but I do not see any Bytes or Frames Sent. I do have Control Frames being Sent and Received. I have tried to uninstall the client and reinstall it with no luck. This is the only machine that seems to be having any VPN issues, so I am not sure what else I can do to troubleshoot.
Can you provide a specific error message or describe what you see on the client? what does the debug tell you? SSL or IKEv2 connection? Is the logon through the web-portal possible? Also a hint of the client OS, newly installed software or recent updates to this specific client might help.
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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...