diff --git a/libc/kernel/uapi/linux/ipsec.h b/libc/kernel/uapi/linux/ipsec.h
new file mode 100644
index 0000000..e9758eb
--- /dev/null
+++ b/libc/kernel/uapi/linux/ipsec.h
@@ -0,0 +1,63 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   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_IPSEC_H
+#define _LINUX_IPSEC_H
+#include <linux/pfkeyv2.h>
+#define IPSEC_PORT_ANY 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPSEC_ULPROTO_ANY 255
+#define IPSEC_PROTO_ANY 255
+enum {
+ IPSEC_MODE_ANY = 0,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPSEC_MODE_TRANSPORT = 1,
+ IPSEC_MODE_TUNNEL = 2,
+ IPSEC_MODE_BEET = 3
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+enum {
+ IPSEC_DIR_ANY = 0,
+ IPSEC_DIR_INBOUND = 1,
+ IPSEC_DIR_OUTBOUND = 2,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPSEC_DIR_FWD = 3,
+ IPSEC_DIR_MAX = 4,
+ IPSEC_DIR_INVALID = 5
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+enum {
+ IPSEC_POLICY_DISCARD = 0,
+ IPSEC_POLICY_NONE = 1,
+ IPSEC_POLICY_IPSEC = 2,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPSEC_POLICY_ENTRUST = 3,
+ IPSEC_POLICY_BYPASS = 4
+};
+enum {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPSEC_LEVEL_DEFAULT = 0,
+ IPSEC_LEVEL_USE = 1,
+ IPSEC_LEVEL_REQUIRE = 2,
+ IPSEC_LEVEL_UNIQUE = 3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+#define IPSEC_MANUAL_REQID_MAX 0x3fff
+#define IPSEC_REPLAYWSIZE 32
+#endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */