How to check VPN connection status on Android ICS

Question

I\'m trying to register receiver, that will check VPN status. I have tried this: Get VPN Connection status on Android but looks like it no longer works on ICS. I have checked an

Answer 1

My solution is polling a NIC list.
# You can get the list by executing command "ls /sys/class/net".

If the list has "tun0", the device already has connected to VPN.