system("ipset create temp_$set_name $set_type");
                foreach (@network) {
                        system("ipset add temp_$set_name $_");
                        }
                system("ipset create -exist $set_name $set_type");
                system("ipset swap temp_$set_name $set_name");
                system("ipset destroy temp_$set_name");
                my $cron_notice = "IPSet: $set_name updated (as of: $date_now).";
                system("logger", "-p", "cron.notice", $cron_notice);