diff --git a/libc/kernel/common/linux/route.h b/libc/kernel/common/linux/route.h
index cdb8744..41e5a08 100644
--- a/libc/kernel/common/linux/route.h
+++ b/libc/kernel/common/linux/route.h
@@ -7,43 +7,53 @@
  ***   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_ROUTE_H
 #define _LINUX_ROUTE_H
-
 #include <linux/if.h>
 #include <linux/compiler.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct rtentry
 {
  unsigned long rt_pad1;
  struct sockaddr rt_dst;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct sockaddr rt_gateway;
  struct sockaddr rt_genmask;
  unsigned short rt_flags;
  short rt_pad2;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rt_pad3;
  void *rt_pad4;
  short rt_metric;
  char __user *rt_dev;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rt_mtu;
 #define rt_mss rt_mtu  
  unsigned long rt_window;
  unsigned short rt_irtt;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define RTF_UP 0x0001  
 #define RTF_GATEWAY 0x0002  
 #define RTF_HOST 0x0004  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RTF_REINSTATE 0x0008  
 #define RTF_DYNAMIC 0x0010  
 #define RTF_MODIFIED 0x0020  
 #define RTF_MTU 0x0040  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RTF_MSS RTF_MTU  
 #define RTF_WINDOW 0x0080  
 #define RTF_IRTT 0x0100  
 #define RTF_REJECT 0x0200  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-