L2tp VPN connection plugin !

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http://askubuntu.com – I have L2tp VPN connection working on my Android (http://www.ivpn.mobi)... I wanted to add this to ubuntu through VPN connections, but I only found PPTP plugin installed, I've searched a lot to find a way to add a Lt2p plugin with no success !! I m wondering is it that hard ? any solution ? Thanks (HowTos)