I had to reinstall my system when I upgraded to 12.04.
Unfortunately, although it was previously working, the VPN server isn't working as I wanted.

I followed the guide here: http://blog.riobard.com/2011/11/12/pptp-vpn-on-ubuntu

Sadly I can't connect.

The service is running.
I see that pptpd is listening to port 1723.

The strange thing is: I previously had a ppp virtual network adapter, but this is no longer the case. When I look at ifconfig -a, I just get the network adapter eth0 and the loopback interface.

Any help would be much appreciated...