diff --git a/libc/kernel/uapi/linux/ip.h b/libc/kernel/uapi/linux/ip.h
new file mode 100644
index 0000000..b703879
--- /dev/null
+++ b/libc/kernel/uapi/linux/ip.h
@@ -0,0 +1,181 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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 _UAPI_LINUX_IP_H
+#define _UAPI_LINUX_IP_H
+#include <linux/types.h>
+#include <asm/byteorder.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPTOS_TOS_MASK 0x1E
+#define IPTOS_TOS(tos) ((tos)&IPTOS_TOS_MASK)
+#define IPTOS_LOWDELAY 0x10
+#define IPTOS_THROUGHPUT 0x08
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPTOS_RELIABILITY 0x04
+#define IPTOS_MINCOST 0x02
+#define IPTOS_PREC_MASK 0xE0
+#define IPTOS_PREC(tos) ((tos)&IPTOS_PREC_MASK)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPTOS_PREC_NETCONTROL 0xe0
+#define IPTOS_PREC_INTERNETCONTROL 0xc0
+#define IPTOS_PREC_CRITIC_ECP 0xa0
+#define IPTOS_PREC_FLASHOVERRIDE 0x80
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPTOS_PREC_FLASH 0x60
+#define IPTOS_PREC_IMMEDIATE 0x40
+#define IPTOS_PREC_PRIORITY 0x20
+#define IPTOS_PREC_ROUTINE 0x00
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPOPT_COPY 0x80
+#define IPOPT_CLASS_MASK 0x60
+#define IPOPT_NUMBER_MASK 0x1f
+#define IPOPT_COPIED(o) ((o)&IPOPT_COPY)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPOPT_CLASS(o) ((o)&IPOPT_CLASS_MASK)
+#define IPOPT_NUMBER(o) ((o)&IPOPT_NUMBER_MASK)
+#define IPOPT_CONTROL 0x00
+#define IPOPT_RESERVED1 0x20
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPOPT_MEASUREMENT 0x40
+#define IPOPT_RESERVED2 0x60
+#define IPOPT_END (0 |IPOPT_CONTROL)
+#define IPOPT_NOOP (1 |IPOPT_CONTROL)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPOPT_SEC (2 |IPOPT_CONTROL|IPOPT_COPY)
+#define IPOPT_LSRR (3 |IPOPT_CONTROL|IPOPT_COPY)
+#define IPOPT_TIMESTAMP (4 |IPOPT_MEASUREMENT)
+#define IPOPT_CIPSO (6 |IPOPT_CONTROL|IPOPT_COPY)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPOPT_RR (7 |IPOPT_CONTROL)
+#define IPOPT_SID (8 |IPOPT_CONTROL|IPOPT_COPY)
+#define IPOPT_SSRR (9 |IPOPT_CONTROL|IPOPT_COPY)
+#define IPOPT_RA (20|IPOPT_CONTROL|IPOPT_COPY)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPVERSION 4
+#define MAXTTL 255
+#define IPDEFTTL 64
+#define IPOPT_OPTVAL 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPOPT_OLEN 1
+#define IPOPT_OFFSET 2
+#define IPOPT_MINOFF 4
+#define MAX_IPOPTLEN 40
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPOPT_NOP IPOPT_NOOP
+#define IPOPT_EOL IPOPT_END
+#define IPOPT_TS IPOPT_TIMESTAMP
+#define IPOPT_TS_TSONLY 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IPOPT_TS_TSANDADDR 1
+#define IPOPT_TS_PRESPEC 3
+#define IPV4_BEET_PHMAXLEN 8
+struct iphdr {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#ifdef __LITTLE_ENDIAN_BITFIELD
+ __u8 ihl:4,
+ version:4;
+#elif defined (__BIG_ENDIAN_BITFIELD)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u8 version:4,
+ ihl:4;
+#else
+#error "Please fix <asm/byteorder.h>"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+ __u8 tos;
+ __be16 tot_len;
+ __be16 id;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __be16 frag_off;
+ __u8 ttl;
+ __u8 protocol;
+ __sum16 check;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __be32 saddr;
+ __be32 daddr;
+};
+struct ip_auth_hdr {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u8 nexthdr;
+ __u8 hdrlen;
+ __be16 reserved;
+ __be32 spi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __be32 seq_no;
+ __u8 auth_data[0];
+};
+struct ip_esp_hdr {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __be32 spi;
+ __be32 seq_no;
+ __u8 enc_data[0];
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct ip_comp_hdr {
+ __u8 nexthdr;
+ __u8 flags;
+ __be16 cpi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+struct ip_beet_phdr {
+ __u8 nexthdr;
+ __u8 hdrlen;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u8 padlen;
+ __u8 reserved;
+};
+enum
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+{
+ IPV4_DEVCONF_FORWARDING=1,
+ IPV4_DEVCONF_MC_FORWARDING,
+ IPV4_DEVCONF_PROXY_ARP,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPV4_DEVCONF_ACCEPT_REDIRECTS,
+ IPV4_DEVCONF_SECURE_REDIRECTS,
+ IPV4_DEVCONF_SEND_REDIRECTS,
+ IPV4_DEVCONF_SHARED_MEDIA,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPV4_DEVCONF_RP_FILTER,
+ IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
+ IPV4_DEVCONF_BOOTP_RELAY,
+ IPV4_DEVCONF_LOG_MARTIANS,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPV4_DEVCONF_TAG,
+ IPV4_DEVCONF_ARPFILTER,
+ IPV4_DEVCONF_MEDIUM_ID,
+ IPV4_DEVCONF_NOXFRM,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPV4_DEVCONF_NOPOLICY,
+ IPV4_DEVCONF_FORCE_IGMP_VERSION,
+ IPV4_DEVCONF_ARP_ANNOUNCE,
+ IPV4_DEVCONF_ARP_IGNORE,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPV4_DEVCONF_PROMOTE_SECONDARIES,
+ IPV4_DEVCONF_ARP_ACCEPT,
+ IPV4_DEVCONF_ARP_NOTIFY,
+ IPV4_DEVCONF_ACCEPT_LOCAL,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ IPV4_DEVCONF_SRC_VMARK,
+ IPV4_DEVCONF_PROXY_ARP_PVLAN,
+ IPV4_DEVCONF_ROUTE_LOCALNET,
+ __IPV4_DEVCONF_MAX
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
+#endif