# this configures a specific tun interface for the given subnet
define virtual::openvpn::interface($subnet) {
	# create and setup the interface if it doesn't exist already
	# this is a "bit" coarse grained but works for me
	ifupdown::manual {
		$name:
			up => "/var/lib/puppet/modules/virtual/openvpn/create_interface ${name} ${subnet}",
			down => "/var/lib/puppet/modules/virtual/openvpn/destroy_interface ${name} ${subnet}" 
	}
}