How to do it:
#!/bin/bash
ping_var=$(ping -6 -c1 vpn.example.com | grep "1 received")
if [[ $ping_var == *"1 received"* ]];
then
sleep 1
ping -6 -c1 vpn.example.com
else
sleep 1
killall -9 openvpn
sleep 1
openvpn --config /home/mario/Dokumente/Hetzner/wks01.ovpn >> /var/log/openvpn-wks01.log
fi
exit