diff --git a/libc/kernel/common/linux/sockios.h b/libc/kernel/common/linux/sockios.h
index d111359..0c93e40 100644
--- a/libc/kernel/common/linux/sockios.h
+++ b/libc/kernel/common/linux/sockios.h
@@ -7,101 +7,109 @@
  ***   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_SOCKIOS_H
 #define _LINUX_SOCKIOS_H
-
 #include <asm/sockios.h>
-
 #define SIOCINQ FIONREAD
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCOUTQ TIOCOUTQ
-
 #define SIOCADDRT 0x890B  
 #define SIOCDELRT 0x890C  
 #define SIOCRTMSG 0x890D  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCGIFNAME 0x8910  
 #define SIOCSIFLINK 0x8911  
 #define SIOCGIFCONF 0x8912  
 #define SIOCGIFFLAGS 0x8913  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCSIFFLAGS 0x8914  
 #define SIOCGIFADDR 0x8915  
 #define SIOCSIFADDR 0x8916  
 #define SIOCGIFDSTADDR 0x8917  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCSIFDSTADDR 0x8918  
 #define SIOCGIFBRDADDR 0x8919  
 #define SIOCSIFBRDADDR 0x891a  
 #define SIOCGIFNETMASK 0x891b  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCSIFNETMASK 0x891c  
 #define SIOCGIFMETRIC 0x891d  
 #define SIOCSIFMETRIC 0x891e  
 #define SIOCGIFMEM 0x891f  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCSIFMEM 0x8920  
 #define SIOCGIFMTU 0x8921  
 #define SIOCSIFMTU 0x8922  
 #define SIOCSIFNAME 0x8923  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCSIFHWADDR 0x8924  
 #define SIOCGIFENCAP 0x8925  
 #define SIOCSIFENCAP 0x8926 
 #define SIOCGIFHWADDR 0x8927  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCGIFSLAVE 0x8929  
 #define SIOCSIFSLAVE 0x8930
 #define SIOCADDMULTI 0x8931  
 #define SIOCDELMULTI 0x8932
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCGIFINDEX 0x8933  
 #define SIOGIFINDEX SIOCGIFINDEX  
 #define SIOCSIFPFLAGS 0x8934  
 #define SIOCGIFPFLAGS 0x8935
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCDIFADDR 0x8936  
 #define SIOCSIFHWBROADCAST 0x8937  
 #define SIOCGIFCOUNT 0x8938  
 #define SIOCKILLADDR 0x8939  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCGIFBR 0x8940  
 #define SIOCSIFBR 0x8941  
-
 #define SIOCGIFTXQLEN 0x8942  
 #define SIOCSIFTXQLEN 0x8943  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCETHTOOL 0x8946  
-
 #define SIOCGMIIPHY 0x8947  
 #define SIOCGMIIREG 0x8948  
 #define SIOCSMIIREG 0x8949  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCWANDEV 0x894A  
-
 #define SIOCDARP 0x8953  
 #define SIOCGARP 0x8954  
 #define SIOCSARP 0x8955  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCDRARP 0x8960  
 #define SIOCGRARP 0x8961  
 #define SIOCSRARP 0x8962  
-
 #define SIOCGIFMAP 0x8970  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCSIFMAP 0x8971  
-
 #define SIOCADDDLCI 0x8980  
 #define SIOCDELDLCI 0x8981  
-
 #define SIOCGIFVLAN 0x8982  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCSIFVLAN 0x8983  
-
 #define SIOCBONDENSLAVE 0x8990  
 #define SIOCBONDRELEASE 0x8991  
 #define SIOCBONDSETHWADDR 0x8992  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCBONDSLAVEINFOQUERY 0x8993  
 #define SIOCBONDINFOQUERY 0x8994  
 #define SIOCBONDCHANGEACTIVE 0x8995  
-
 #define SIOCBRADDBR 0x89a0  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCBRDELBR 0x89a1  
 #define SIOCBRADDIF 0x89a2  
 #define SIOCBRDELIF 0x89a3  
-
 #define SIOCDEVPRIVATE 0x89F0  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SIOCPROTOPRIVATE 0x89E0  
 #endif