+< month-graph
+< openvpn default
+< openvpn destination port used
+< openvpn disabled
+< openvpn enabled
+< openvpn fragment allowed with udp
+< openvpn mssfix allowed with udp
+< openvpn prefix local subnet
+< openvpn prefix openvpn subnet
+< openvpn prefix remote subnet
+< openvpn subnet is used
+< outgoing traffic in bytes per second