+#Safe unattended install of iptables-persistent
+function check_install_iptables_persistent(){
+ echo -e "\nChecking required packages: iptables-persistent"
+ if dpkg -l iptables-persistent &>/dev/null; then
+ echo -e " Not installed.\nInstalling iptables-persistent requires root privileges"
+ echo iptables-persistent iptables-persistent/autosave_v4 boolean true | sudo debconf-set-selections
+ echo iptables-persistent iptables-persistent/autosave_v6 boolean true | sudo debconf-set-selections
+ sudo apt-get -yq install iptables-persistent
+ fi
+}
+