hi friend,
I installed on my cloud ibox3 OpenPLi-4.0-beta-cloud-ibox-3-20150513_usb
not finding the plugin openvpn I followed these steps
opkg update
opkg list | grep vpn
opkg install openvpn
update-rc.d openvpn defaults
if I try to give the command ifconfig I do not see the interface tun0
the vpn does not work 
Help me please