These two scripts are called when you start a qemu or kvm virtual machine. I removed the openvpn –mktun and –rmtun commands because qemu handles it for you.
I was curious about using NTP to keep a few stand-alone machines synchronized. None of them have access to the outside world, or access to another host that has access to the outside world - they’re completely cut off. So how do you run a NTP server with no upstream time source? Easy!