diff --git a/www/manager6/sdn/zones/Base.js b/www/manager6/sdn/zones/Base.js
index c4bdc72c..724ae317 100644
--- a/www/manager6/sdn/zones/Base.js
+++ b/www/manager6/sdn/zones/Base.js
@@ -31,12 +31,12 @@ Ext.define('PVE.sdn.zones.BaseEdit', {
 	me.isCreate = !me.zone;
 
 	if (me.isCreate) {
-            me.url = '/api2/extjs/cluster/sdn/zones';
-            me.method = 'POST';
-        } else {
-            me.url = '/api2/extjs/cluster/sdn/zones/' + me.zone;
-            me.method = 'PUT';
-        }
+	    me.url = '/api2/extjs/cluster/sdn/zones';
+	    me.method = 'POST';
+	} else {
+	    me.url = '/api2/extjs/cluster/sdn/zones/' + me.zone;
+	    me.method = 'PUT';
+	}
 
 	var ipanel = Ext.create(me.paneltype, {
 	    type: me.type,
diff --git a/www/manager6/sdn/zones/QinQEdit.js b/www/manager6/sdn/zones/QinQEdit.js
index beb2573e..477604a3 100644
--- a/www/manager6/sdn/zones/QinQEdit.js
+++ b/www/manager6/sdn/zones/QinQEdit.js
@@ -4,68 +4,72 @@ Ext.define('PVE.sdn.zones.QinQInputPanel', {
     onlineHelp: 'pvesdn_zone_plugin_qinq',
 
     onGetValues: function(values) {
-        var me = this;
+	let me = this;
 
-        if (me.isCreate) {
-            values.type = me.type;
-        } else {
-            delete values.sdn;
-        }
+	if (me.isCreate) {
+	    values.type = me.type;
+	} else {
+	    delete values.sdn;
+	}
 
-        return values;
+	return values;
     },
 
     initComponent : function() {
-	var me = this;
-
-        me.items = [
-           {
-            xtype: me.isCreate ? 'textfield' : 'displayfield',
-            name: 'zone',
-            maxLength: 8,
-            value: me.zone || '',
-            fieldLabel: 'ID',
-            allowBlank: false
-          },
-          {
-            xtype: 'textfield',
-            name: 'bridge',
-            fieldLabel: 'Bridge',
-            allowBlank: false,
-          },
-	  {
-	    xtype: 'proxmoxintegerfield',
-	    name: 'tag',
-	    fieldLabel: gettext('Service vlan'),
-	    allowBlank: false
-	  },
-          {
-            xtype: 'proxmoxKVComboBox',
-            name: 'vlan-protocol',
-            fieldLabel: gettext('Service vlan protocol'),
-            allowBlank: true,
-            value: '802.1q',
-            comboItems: [['802.1q', '802.1q'], ['802.1ad', '802.1ad']]
-          },
-          {
-            xtype: 'proxmoxintegerfield',
-            name: 'mtu',
-            minValue: 100,
-            maxValue: 65000,
-            fieldLabel: 'MTU',
-            skipEmptyText: true,
-            allowBlank: true,
-            emptyText: 'auto'
-          },
-          {
-            xtype: 'pveNodeSelector',
-            name: 'nodes',
-            fieldLabel: gettext('Nodes'),
-            emptyText: gettext('All') + ' (' + gettext('No restrictions') +')',
-            multiSelect: true,
-            autoSelect: false
-          },
+	let me = this;
 
+	me.items = [
+	    {
+		xtype: me.isCreate ? 'textfield' : 'displayfield',
+		name: 'zone',
+		maxLength: 8,
+		value: me.zone || '',
+		fieldLabel: 'ID',
+		allowBlank: false
+	    },
+	    {
+		xtype: 'textfield',
+		name: 'bridge',
+		fieldLabel: 'Bridge',
+		allowBlank: false,
+	    },
+	    {
+		xtype: 'proxmoxintegerfield',
+		name: 'tag',
+		minValue: 0,
+		maxValue: 4096,
+		fieldLabel: gettext('Service VLAN'),
+		allowBlank: false
+	    },
+	    {
+		xtype: 'proxmoxKVComboBox',
+		name: 'vlan-protocol',
+		fieldLabel: gettext('Service-VLAN Protocol'),
+		allowBlank: true,
+		value: '802.1q',
+		comboItems: [
+		    ['802.1q', '802.1q'],
+		    ['802.1ad', '802.1ad'],
+		],
+	    },
+	    {
+		xtype: 'proxmoxintegerfield',
+		name: 'mtu',
+		minValue: 100,
+		maxValue: 65000,
+		fieldLabel: 'MTU',
+		skipEmptyText: true,
+		allowBlank: true,
+		emptyText: 'auto'
+	    },
+	    {
+		xtype: 'pveNodeSelector',
+		name: 'nodes',
+		fieldLabel: gettext('Nodes'),
+		emptyText: gettext('All') + ' (' + gettext('No restrictions') +')',
+		multiSelect: true,
+		autoSelect: false
+	    },
 	];
 
 	me.callParent();