(legacy) some more cleanups interfaces_assign.php

src/www/interfaces_assign.php

@@ -268,9 +268,9 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
 
         if (count($input_errors) == 0) {
           /* No errors detected, so update the config */
+          $changes = 0;
           foreach ($_POST as $ifname => $ifport) {
-              if ($ifname == 'lan' || $ifname == 'wan' || substr($ifname, 0, 3) == 'opt') {
-                  if (!is_array($ifport)) {
+              if (!is_array($ifport) && ($ifname == 'lan' || $ifname == 'wan' || substr($ifname, 0, 3) == 'opt')) {
                   $reloadif = false;
                   if (!empty($config['interfaces'][$ifname]['if']) && $config['interfaces'][$ifname]['if'] <> $ifport) {
                       interface_bring_down($ifname);
@@ -310,11 +310,14 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
                       }
                       /* Reload all for the interface. */
                       interface_configure($ifname, true);
-                          // reload filter (original from apply action)
-                          filter_configure();
+                      // count changes
+                      $changes++;
                   }
               }
           }
+          if ($changes > 0) {
+              // reload filter when interfaces have changed (original from apply action)
+              filter_configure();
           }
 
           write_config();