From: Mike Manning <redacted>
Date: Mon, 29 Feb 2016 11:32:51 +0000

 
-	/* vlan address was equal to the old address and is different from
+	/* vlan address was equal to the old address so now also inherit
 	 * the new address */
-	if (ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr) &&
-	    !ether_addr_equal(vlandev->dev_addr, dev->dev_addr))
-		dev_uc_add(dev, vlandev->dev_addr);
+	if (ether_addr_equal(vlandev->dev_addr, vlan->real_dev_addr))
+		ether_addr_copy(vlandev->dev_addr, dev->dev_addr);
 

This dev_uc_add() call removal cannot be correct, if the device is up
we must programe it into the hardware unicast filters and if also
potentially put it into promiscuous mode via __dev_set_rx_mode().

Also your subject line isn't formatted properly, it should be:

	[PATCH net] vlan: Propagate MAC address changes properly.