diff --git a/components/net/lwip-2.1.0/src/arch/sys_arch.c b/components/net/lwip-2.1.0/src/arch/sys_arch.c
index bf62cb05bc..ee96249bec 100644
--- a/components/net/lwip-2.1.0/src/arch/sys_arch.c
+++ b/components/net/lwip-2.1.0/src/arch/sys_arch.c
@@ -1,17 +1,35 @@
 /*
- * File      : sys_arch.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2012, RT-Thread Development Team
+ * COPYRIGHT (C) 2006-2018, RT-Thread Development Team
+ * All rights reserved.
  *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
  *
  * Change Logs:
  * Date           Author       Notes
  * 2012-12-8      Bernard      add file header
  *                             export bsd socket symbol for RT-Thread Application Module 
  * 2017-11-15     Bernard      add lock for init_done callback.
+ * 2018-11-02     MurphyZhao   port to lwip2.1.0
  */
 
 #include <rtthread.h>
diff --git a/components/net/lwip-2.1.0/src/netif/ethernetif.c b/components/net/lwip-2.1.0/src/netif/ethernetif.c
index 3b68d726c7..910d7c3470 100644
--- a/components/net/lwip-2.1.0/src/netif/ethernetif.c
+++ b/components/net/lwip-2.1.0/src/netif/ethernetif.c
@@ -1,25 +1,6 @@
-/*
- * File      : ethernetif.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE
- *
- * Change Logs:
- * Date           Author       Notes
- * 2010-07-07     Bernard      fix send mail to mailbox issue.
- * 2011-07-30     mbbill       port lwIP 1.4.0 to RT-Thread
- * 2012-04-10     Bernard      add more compatible with RT-Thread.
- * 2012-11-12     Bernard      The network interface can be initialized
- *                             after lwIP initialization.
- * 2013-02-28     aozima       fixed list_tcps bug: ipaddr_ntoa isn't reentrant.
- * 2016-08-18     Bernard      port to lwIP 2.0.0
- */
-
 /*
  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * COPYRIGHT (C) 2006-2018, RT-Thread Development Team
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -48,13 +29,16 @@
  *
  * Author: Adam Dunkels <adam@sics.se>
  *
- */
-
-/*
- * This file is a skeleton for developing Ethernet network interface
- * drivers for lwIP. Add code to the low_level functions and do a
- * search-and-replace for the word "ethernetif" to replace it with
- * something that better describes your network interface.
+ * Change Logs:
+ * Date           Author       Notes
+ * 2010-07-07     Bernard      fix send mail to mailbox issue.
+ * 2011-07-30     mbbill       port lwIP 1.4.0 to RT-Thread
+ * 2012-04-10     Bernard      add more compatible with RT-Thread.
+ * 2012-11-12     Bernard      The network interface can be initialized
+ *                             after lwIP initialization.
+ * 2013-02-28     aozima       fixed list_tcps bug: ipaddr_ntoa isn't reentrant.
+ * 2016-08-18     Bernard      port to lwIP 2.0.0
+ * 2018-11-02     MurphyZhao   port to lwIP 2.1.0
  */
 
 #include "lwip/opt.h"