http://gdncgijky3xvocpkq6xqk5uda4vsnvzuk7ke7jrvxnvyjwkq35iq.b32.i2p/posts/documentation/linux/317-openvpn-network-manager-and-max-routes.html
Network-manager, simply, sucks. But sometimes you have little choice but to use it.Unfortunately, despite a bug being sat idle for some time, Network-manager-openvpn doesn't support various OpenVPN