I'm attaching an AnyConnect Client, latest version 2.5.3046, to a UC540 with a Windows 7 64 bit PC. Connects fine and I have access to the private network. However, the DNS Servers entries for the tunnel adapter on the PC have IPv6 addresses in them. As a result I cannot do any name resolution while connected. The UC540 is set for full tunnel mode. This is what else I've tested: Same client on an XP attaching to same UC540 works fine; older AnyConnect client, 2.5.2014, on the same Windows 7 machine has same results.