--- zzzz-none-000/linux-4.1.52/net/bridge/br_ioctl.c	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/net/bridge/br_ioctl.c	2022-03-02 11:37:13.000000000 +0000
@@ -102,6 +102,11 @@
 	else
 		ret = br_del_if(br, dev);
 
+#if defined(CONFIG_BCM_KF_BRIDGE_PORT_ISOLATION)
+	rcu_read_lock();
+    br_dev_notify_if_change(br->dev, dev, isadd);
+	rcu_read_unlock();
+#endif
 	return ret;
 }
 
@@ -343,6 +348,7 @@
 
 		return br_del_bridge(net, buf);
 	}
+
 	}
 
 	return -EOPNOTSUPP;