diff --git a/libc/kernel/common/linux/if_pppolac.h b/libc/kernel/common/linux/if_pppolac.h
new file mode 100644
index 000000000..bf6eba0d4
--- /dev/null
+++ b/libc/kernel/common/linux/if_pppolac.h
@@ -0,0 +1,29 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __LINUX_IF_PPPOLAC_H
+#define __LINUX_IF_PPPOLAC_H
+
+#include <linux/socket.h>
+#include <linux/types.h>
+
+#define PX_PROTO_OLAC 2
+
+struct sockaddr_pppolac {
+ sa_family_t sa_family;
+ unsigned int sa_protocol;
+ int udp_socket;
+ struct __attribute__((packed)) {
+ __u16 tunnel, session;
+ } local, remote;
+} __attribute__((packed));
+
+#endif
diff --git a/libc/kernel/common/linux/ipsec.h b/libc/kernel/common/linux/ipsec.h
new file mode 100644
index 000000000..56acafa7d
--- /dev/null
+++ b/libc/kernel/common/linux/ipsec.h
@@ -0,0 +1,56 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _LINUX_IPSEC_H
+#define _LINUX_IPSEC_H
+
+#include <linux/pfkeyv2.h>
+
+#define IPSEC_PORT_ANY 0
+#define IPSEC_ULPROTO_ANY 255
+#define IPSEC_PROTO_ANY 255
+
+enum {
+ IPSEC_MODE_ANY = 0,
+ IPSEC_MODE_TRANSPORT = 1,
+ IPSEC_MODE_TUNNEL = 2,
+ IPSEC_MODE_BEET = 3
+};
+
+enum {
+ IPSEC_DIR_ANY = 0,
+ IPSEC_DIR_INBOUND = 1,
+ IPSEC_DIR_OUTBOUND = 2,
+ IPSEC_DIR_FWD = 3,
+ IPSEC_DIR_MAX = 4,
+ IPSEC_DIR_INVALID = 5
+};
+
+enum {
+ IPSEC_POLICY_DISCARD = 0,
+ IPSEC_POLICY_NONE = 1,
+ IPSEC_POLICY_IPSEC = 2,
+ IPSEC_POLICY_ENTRUST = 3,
+ IPSEC_POLICY_BYPASS = 4
+};
+
+enum {
+ IPSEC_LEVEL_DEFAULT = 0,
+ IPSEC_LEVEL_USE = 1,
+ IPSEC_LEVEL_REQUIRE = 2,
+ IPSEC_LEVEL_UNIQUE = 3
+};
+
+#define IPSEC_MANUAL_REQID_MAX 0x3fff
+
+#define IPSEC_REPLAYWSIZE 32
+
+#endif
diff --git a/libc/kernel/common/linux/msm_audio.h b/libc/kernel/common/linux/msm_audio.h
index 9ac58aaea..eed59012e 100644
--- a/libc/kernel/common/linux/msm_audio.h
+++ b/libc/kernel/common/linux/msm_audio.h
@@ -82,4 +82,3 @@ struct msm_snd_endpoint {
 #define SND_GET_ENDPOINT _IOWR(SND_IOCTL_MAGIC, 5, struct msm_snd_endpoint *)
 
 #endif
-
diff --git a/libc/kernel/tools/update_all.py b/libc/kernel/tools/update_all.py
index 6272fcf54..d25dc0e7e 100755
--- a/libc/kernel/tools/update_all.py
+++ b/libc/kernel/tools/update_all.py
@@ -73,7 +73,9 @@ for path in sources:
 
     print "cleaning: %-*s -> %-*s (%s)" % ( 35, path, 35, dst_path, r )
 
-usePerforce = os.environ.has_key("ANDROID_PRODUCT_OUT")
+# We don't use Perforce anymore, but just in case, define ANDROID_USE_P4
+# in your environment if you think you need it.
+usePerforce = os.environ.has_key("ANDROID_USE_P4")
 
 if usePerforce:
     b.updateP4Files()