#!/bin/bash

sleep 30
while true
do
    # Test PPP
    cat /proc/net/dev | grep ppp0
    if [ $? -eq 0 ]
	then
	    echo "PPP Ok!"
	else
	    (/usr/bin/wvdial huawei-e220)&
	    sleep 10
	    ip route del default
	    ip route add default dev ppp0
    fi
    sleep 5
    # Test OpenVPN
    ss -u -a | grep openvpn
    if [ $? -eq 0 ]
	then
	    echo "OpenVPN Ok!"
	else
	    systemctl restart openvpn@server
    fi
    sleep 30
done