librenms-librenms/html/includes/graphs/device/vpdn_sessions_l2tp.inc.php

<?php

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

$rrd_filename = $config['rrd_dir'].'/'.$device['hostname'].'/vpdn-l2tp.rrd';

$stats = array('sessions');

$i = 0;
foreach ($stats as $stat) {
    $i++;
    $rrd_list[$i]['filename'] = $rrd_filename;
    $rrd_list[$i]['ds']       = $stat;
}

$colours = 'mixed';

$nototal    = 1;
$simple_rrd = 1;

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