gistfile1.txt

diff --git a/src/etc/inc/interfaces.inc b/src/etc/inc/interfaces.inc
index b35964d7ab..4c60f9409e 100644
--- a/src/etc/inc/interfaces.inc
+++ b/src/etc/inc/interfaces.inc
@@ -2093,7 +2093,8 @@ function interface_ppps_configure($interface) {
 		}
 	}
 
-	if (is_array($ports) && count($ports) > 1) {
+	if (isset($ppp['pppoe-multilink-over-singlelink']) ||
+	    (is_array($ports) && count($ports) > 1)) {
 		$multilink = "enable";
 	} else {
 		$multilink = "disable";
@@ -2161,6 +2162,7 @@ startup:
 	set console close
 	# configure the web server
 	set web close
+	log +iface +iface2
 
 default:
 {$ppp['type']}client:
@@ -2294,7 +2296,8 @@ EOD;
 				$mtus[$pid] = get_interface_mtu($port) - 8;
 			}
 		}
-		if (! ($type == "pppoe" && $mtus[$pid] > 1492) ) {
+		if (!isset($ppp['pppoe-multilink-over-singlelink']) &&
+		    !($type == "pppoe" && $mtus[$pid] > 1492)) {
 			// N.B. MTU for PPPoE with MTU > 1492 is set using pppoe max-payload - see below
 			$mpdconf .= <<<EOD
 	set link mtu {$mtus[$pid]}
@@ -2302,7 +2305,8 @@ EOD;
 EOD;
 		}
 
-		if (!empty($mrus[$pid])) {
+		if (!isset($ppp['pppoe-multilink-over-singlelink']) &&
+		    !empty($mrus[$pid])) {
 			$mpdconf .= <<<EOD
 	set link mru {$mrus[$pid]}
 
diff --git a/src/usr/local/www/interfaces_ppps_edit.php b/src/usr/local/www/interfaces_ppps_edit.php
index d10470b7f0..59b0fd8d50 100644
--- a/src/usr/local/www/interfaces_ppps_edit.php
+++ b/src/usr/local/www/interfaces_ppps_edit.php
@@ -100,6 +100,9 @@ if (isset($id) && $a_ppps[$id]) {
 	if (isset($a_ppps[$id]['protocomp'])) {
 		$pconfig['protocomp'] = true;
 	}
+	if (isset($a_ppps[$id]['pppoe-multilink-over-singlelink'])) {
+		$pconfig['pppoe-multilink-over-singlelink'] = true;
+	}
 	if (isset($a_ppps[$id]['vjcomp'])) {
 		$pconfig['vjcomp'] = true;
 	}
@@ -411,6 +414,8 @@ if ($_POST['save']) {
 		$ppp['shortseq'] = $_POST['shortseq'] ? true : false;
 		$ppp['acfcomp'] = $_POST['acfcomp'] ? true : false;
 		$ppp['protocomp'] = $_POST['protocomp'] ? true : false;
+		$ppp['pppoe-multilink-over-singlelink'] =
+		    $_POST['pppoe-multilink-over-singlelink'] ? true : false;
 		$ppp['vjcomp'] = $_POST['vjcomp'] ? true : false;
 		$ppp['tcpmssfix'] = $_POST['tcpmssfix'] ? true : false;
 		if (is_array($port_data['bandwidth'])) {
@@ -827,6 +832,13 @@ $section->addInput(new Form_Checkbox(
 	$pconfig['protocomp']
 ))->setHelp('Protocol field compression. This option saves one byte per frame for most frames.');
 
+$section->addInput(new Form_Checkbox(
+	'pppoe-multilink-over-singlelink',
+	'Multilink over single link',
+	'Multilink extensions over single link',
+	$pconfig['pppoe-multilink-over-singlelink']
+))->addClass('pppoe')->setHelp('If provider support LCP multilink extensions over single link (will ignore MTU / MRU settings)');
+
 // Display the Link parameters. We will hide this by default, then un-hide the selected ones on clicking 'Advanced'
 $j = 0;
 foreach ($linklist['list'] as $ifnm => $nm) {
@@ -940,6 +952,7 @@ events.push(function() {
 			    (!$pconfig['tcpmssfix']) &&
 			    (!$pconfig['shortseq']) &&
 			    (!$pconfig['acfcomp']) &&
+			    (!$pconfig['pppoe-multilink-over-singlelink']) &&
 			    (!$pconfig['protocomp'])) {
 				$showadv = false;
 			} else {