}
}
-my $interface = `cat /var/ipfire/red/iface 2>/dev/null`;
-my @data_now = `ip -s link show $interface 2>/dev/null`;
+my $interface = &General::get_red_interface();
+my @data_now = &General::system_output("ip", "-s", "link", "show", "$interface");
my $lastline;
my $rxb_now = 0;