luci/applications/luci-app-mwan3/luasrc/view/mwan/overview_status_interface.htm

<%#
 Copyright 2014 Aedan Renner <chipdankly@gmail.com>
 Copyright 2018 Florian Eckert <fe@dev.tdt.de>
 Licensed to the public under the GNU General Public License v2.
-%>

<script type="text/javascript">//<![CDATA[
XHR.poll(5, '<%=luci.dispatcher.build_url("admin", "status", "mwan", "interface_status")%>', null,
		function(x, status)
		{
			var statusDiv = document.getElementById('mwan_status_text');
			if (status.interfaces)
			{
				var statusview = '';
				for ( var iface in status.interfaces)
				{
					var state = '';
					var css = '';
					switch (status.interfaces[iface].status)
					{
						case 'online':
							state = '<%:Online (tracking active)%>';
							css = 'wanon';
							break;
						case 'notMonitored':
							state = '<%:Online (tracking off)%>';
							css = 'wanon';
							break;
						case 'offline':
							state = '<%:Offline%>';
							css = 'wanoff';
							break;
						default:
							state = '<%:Disabled%>';
							css = 'wanoff';
							break;
					}
					statusview += String.format(
						'<span class="%s"><strong>%s</strong><br />%s</span>',
						css,
						iface,
						state
					);
				}
				statusDiv.innerHTML = statusview;
			}
			else
			{
				statusDiv.innerHTML = '<strong><%:No MWAN interfaces found%></strong>';
			}
		}
	);
//]]></script>

<fieldset id="interface_field" class="cbi-section">
	<legend><%:MWAN Interface Live Status%></legend>
	<div id="mwan_status_text"><img src="<%=resource%>/icons/loading.gif" alt="<%:Loading%>" style="vertical-align:middle" /><%:Collecting data...%></div>
</fieldset>