ERROR: No valid subcommand given.
Valid subcommands:
 * iptables
 * main4
 * iptables-save
 * save4
 * iptables-restore
 * restore4
 * iptables-legacy
 * iptables-legacy-save
 * iptables-legacy-restore
 * iptables-xml
 * xml
 * ip6tables
 * main6
 * ip6tables-save
 * save6
 * ip6tables-restore
 * restore6
 * ip6tables-legacy
 * ip6tables-legacy-save
 * ip6tables-legacy-restore