ed -s /etc/ufw/before.rules <<<  $',/#\t ufw-before-forward\n # \n # START OPENVPN RULES \n # NAT table rules \n *nat \n :POSTROUTING ACCEPT [0:0] \n # Allow traffic from OpenVPN client to eth0 \n -A POSTROUTING -s 10.8.0.0/8 -o eth0 -j MASQUERADE \n COMMIT \n # END OPENVPN RULES'