--- /dev/null
+--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+@@ -1633,7 +1633,7 @@ static int bcm_enet_change_mtu(struct ne
+ return -EBUSY;
+
+ /* add ethernet header + vlan tag size */
+- actual_mtu += VLAN_ETH_HLEN;
++ actual_mtu += VLAN_ETH_HLEN + VLAN_HLEN;
+
+ /*
+ * setup maximum size before we get overflow mark in