I'm using Windows8 as my host OS, and are running a Linux Mint VM on virtualbox, with its network being virtualized as NAT. I'm using Ciscos AnyConnect VPN to get access to a certain network. The Cisco anyConnect is run from my host OS(Windows). When I run AnyConnect at the host-os, the VM is able to connect to the vpn-network as well.
However, when I run AnyConnect at windows, the DNS lookup of the Linux Mint VM stops working. (It's internet connection otherwise is fine).
/etc/resolv.conf looks identical both when the DNS fails(vpn connected on windows-host), and when DNS works correctly(vpn is disconnected on windows-host).
Any clue why and how to fix it?