How to monitor VPN traffic with Wireshark on Windows 7?

I'm running Wireshark 1.6.7 (latest available release) x64 on Windows 7 x64.
I only have a single network card on this computer, and Wireshark shows only it as an available adapter to capture packets on.

If I establish a VPN connection (using Windows' built-in VPN client), Wireshark:

• doesn't show any additional adapter to capture packets on, and
• doesn't see any network traffic flowing through the VPN tunnel.

How can I monitor the traffic on a VPN connection using Wireshark on Windows 7?

Solution 1:

Looks like it's not possible at all :-(

http://www.winpcap.org/misc/faq.htm#Q-5

Solution 2:

Not useful for all scenarios, but one workaround is to run Virtualisation. Run your VPN on your host, and then run the traffic and wireshark capture on the Guest machine