#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
+ 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