librenms-librenms/html/includes/graphs/device/netstat_ip.inc.php

<?php

$rrd_filename = $config['rrd_dir'].'/'.$device['hostname'].'/netstats-ip.rrd';

$stats = array(
    'ipForwDatagrams' => array(),
    'ipInDelivers'    => array(),
    'ipInReceives'    => array(),
    'ipOutRequests'   => array(),
    'ipInDiscards'    => array(),
    'ipOutDiscards'   => array(),
    'ipOutNoRoutes'   => array(),
);

$i = 0;
foreach ($stats as $stat => $array) {
    $i++;
    $rrd_list[$i]['filename'] = $rrd_filename;
    $rrd_list[$i]['descr']    = str_replace('ip', '', $stat);
    $rrd_list[$i]['ds']       = $stat;
    if (strpos($stat, 'Out') !== false) {
        $rrd_list[$i]['invert'] = true;
    }
}

$colours = 'mixed';

$scale_min  = '0';
$nototal    = 1;
$simple_rrd = true;

require 'includes/graphs/generic_multi_line.inc.php';