diff --git a/libc/kernel/common/linux/netdevice.h b/libc/kernel/common/linux/netdevice.h
index 54b58f1..77afa1c 100644
--- a/libc/kernel/common/linux/netdevice.h
+++ b/libc/kernel/common/linux/netdevice.h
@@ -7,63 +7,70 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _LINUX_NETDEVICE_H
 #define _LINUX_NETDEVICE_H
-
 #include <linux/if.h>
 #include <linux/if_ether.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/if_packet.h>
-
 #define MAX_ADDR_LEN 32  
-
 #define NETDEV_TX_OK 0  
 #define NETDEV_TX_BUSY 1  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NETDEV_TX_LOCKED -1  
-
 #define LL_MAX_HEADER 32
-
 #define MAX_HEADER LL_MAX_HEADER
-
 struct net_device_stats
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  unsigned long rx_packets;
  unsigned long tx_packets;
  unsigned long rx_bytes;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long tx_bytes;
  unsigned long rx_errors;
  unsigned long tx_errors;
  unsigned long rx_dropped;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long tx_dropped;
  unsigned long multicast;
  unsigned long collisions;
-
  unsigned long rx_length_errors;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rx_over_errors;
  unsigned long rx_crc_errors;
  unsigned long rx_frame_errors;
  unsigned long rx_fifo_errors;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rx_missed_errors;
-
  unsigned long tx_aborted_errors;
  unsigned long tx_carrier_errors;
  unsigned long tx_fifo_errors;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long tx_heartbeat_errors;
  unsigned long tx_window_errors;
-
  unsigned long rx_compressed;
  unsigned long tx_compressed;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 enum {
  IF_PORT_UNKNOWN = 0,
  IF_PORT_10BASE2,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  IF_PORT_10BASET,
  IF_PORT_AUI,
  IF_PORT_100BASET,
  IF_PORT_100BASETX,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  IF_PORT_100BASEFX
 };
-
 #endif