librenms-librenms/includes/html/pages/search/ipv6.inc.php

<div class="panel panel-default panel-condensed">
    <div class="panel-heading">
        <strong>IPv6 Addresses</strong>
    </div>
    <table id="ipv6-search" class="table table-hover table-condensed table-striped">
        <thead>
            <tr>
                <th data-column-id="hostname">Device</th>
                <th data-column-id="interface">Interface</th>
                <th data-column-id="address" data-sortable="false">Address</th>
                <th data-column-id="description" data-sortable="false">Description</th>
            </tr>
        <thead>
    </table>
</div>

<script>
var grid = $("#ipv6-search").bootgrid({
    ajax: true,
    rowCount: [50, 100, 250, -1],
    templates: {
        header: "<div id=\"{{ctx.id}}\" class=\"{{css.header}}\"><div class=\"row\">"+
                "<div class=\"col-sm-9 actionBar\"><span class=\"pull-left\">"+
                "<form method=\"post\" action=\"\" class=\"form-inline\" role=\"form\">"+
                "<?php echo addslashes(csrf_field()) ?>"+
                "<div class=\"form-group\">"+
                "<select name=\"device_id\" id=\"device_id\" class=\"form-control input-sm\">"+
                "<option value=\"\">All Devices</option>"+
<?php

use LibreNMS\Authentication\LegacyAuth;

$sql = 'SELECT `devices`.`device_id`,`hostname`, `sysName` FROM `devices`';

if (!LegacyAuth::user()->hasGlobalRead()) {
    $sql    .= ' LEFT JOIN `devices_perms` AS `DP` ON `devices`.`device_id` = `DP`.`device_id`';
    $where  .= ' WHERE `DP`.`user_id`=?';
    $param[] = LegacyAuth::id();
}

$sql .= " $where ORDER BY `hostname`";

foreach (dbFetchRows($sql, $param) as $data) {
    echo '"<option value=\"'.$data['device_id'].'\""+';
    if ($data['device_id'] == $_POST['device_id']) {
        echo '" selected"+';
    }

    echo '">'.format_hostname($data, $data['hostname']).'</option>"+';
}
?>
                "</select>"+
                "</div>"+
                "<div class=\"form-group\">"+
                "<select name=\"interface\" id=\"interface\" class=\"form-control input-sm\">"+
                "<option value=\"\">All Interfaces</option>"+
                "<option value=\"Loopback%\""+
<?php
if ($_POST['interface'] == 'Loopback%') {
    echo '" selected "+';
}

?>

                ">Loopbacks</option>"+
                "<option value=\"Vlan%\""+
<?php
if ($_POST['interface'] == 'Vlan%') {
    echo '" selected "+';
}

?>

                ">VLANs</option>"+
                "</select>"+
                "</div>"+
                "<div class=\"form-group\">"+
                "<input type=\"text\" name=\"address\" id=\"address\" size=40 value=\"<?php echo $_POST['address']; ?>\" class=\"form-control input-sm\" placeholder=\"IPv6 Address\"/>"+
                "</div>"+
                "<button type=\"submit\" class=\"btn btn-default input-sm\">Search</button>"+
                "</form></span></div>"+
                  "<div class=\"col-sm-3 actionBar\"><p class=\"{{css.actions}}\"></p></div></div></div>"
    },
    post: function ()
    {
        return {
            id: "address-search",
            search_type: "ipv6",
            device_id: '<?php echo htmlspecialchars($_POST['device_id']); ?>',
            interface: '<?php echo mres($_POST['interface']); ?>',
            address: '<?php echo mres($_POST['address']); ?>'
        };
    },
    url: "ajax_table.php"
});

</script>