AdSchellevis suggestions

src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/InterfaceController.php

@@ -75,6 +75,22 @@ class InterfaceController extends ApiControllerBase
         return $arptable;
     }
 
+    /**
+     * retrieve system arp table contents
+     * @return array
+     */
+    public function flushArpAction()
+    {
+        if ($this->request->isPost()) {
+            $backend = new Backend();
+            $response = $backend->configdpRun("interface flush arp");
+            return $response;
+            }
+        else {
+            return array("message" => "error");
+            }
+    }
+    
     /**
      * retrieve system ndp table contents
      * @return array

src/opnsense/mvc/app/views/OPNsense/Diagnostics/arp.volt

@@ -61,7 +61,17 @@ POSSIBILITY OF SUCH DAMAGE.
                     }
             );
         }
+        
+        
+        function flushARP() {
+            ajaxCall(url = "/api/diagnostics/interface/flushArp",
+                sendData = {}, callback = function (data, status) {
+                    $("#refresh").click();
+                });
+        }
 
+        $("#flush").click(flushARP);
+        
         // initial fetch
         $("#refresh").click(updateARP);
         $("#refresh").click();
@@ -96,6 +106,10 @@ POSSIBILITY OF SUCH DAMAGE.
                 <div class="row">
                     <div class="col-xs-12">
                         <div class="pull-right">
+                            <button id="flush" type="button" class="btn btn-default">
+                                <span>{{ lang._('Flush') }}</span>
+                                <span class="fa fa-eraser"></span>
+                            </button>                            
                             <button id="refresh" type="button" class="btn btn-default">
                                 <span>{{ lang._('Refresh') }}</span>
                                 <span class="fa fa-refresh"></span>

src/opnsense/service/conf/actions.d/actions_interface.conf

@@ -54,6 +54,12 @@ parameters: %s
 type:script_output
 message:request arp table
 
+[flush.arp]
+command:arp -da
+parameters:
+type:script_output
+message:flush arp table
+
 [list.ndp]
 command:/usr/local/opnsense/scripts/interfaces/list_ndp.py
 parameters: %s