diff --git a/libc/kernel/uapi/linux/icmpv6.h b/libc/kernel/uapi/linux/icmpv6.h
new file mode 100644
index 0000000..7ec628c
--- /dev/null
+++ b/libc/kernel/uapi/linux/icmpv6.h
@@ -0,0 +1,161 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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_ICMPV6_H
+#define _UAPI_LINUX_ICMPV6_H
+#include <linux/types.h>
+#include <asm/byteorder.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct icmp6hdr {
+ __u8 icmp6_type;
+ __u8 icmp6_code;
+ __sum16 icmp6_cksum;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ union {
+ __be32 un_data32[1];
+ __be16 un_data16[2];
+ __u8 un_data8[4];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ struct icmpv6_echo {
+ __be16 identifier;
+ __be16 sequence;
+ } u_echo;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ struct icmpv6_nd_advt {
+#ifdef __LITTLE_ENDIAN_BITFIELD
+ __u32 reserved:5,
+ override:1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ solicited:1,
+ router:1,
+ reserved2:24;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u32 router:1,
+ solicited:1,
+ override:1,
+ reserved:29;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+ } u_nd_advt;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ struct icmpv6_nd_ra {
+ __u8 hop_limit;
+#ifdef __LITTLE_ENDIAN_BITFIELD
+ __u8 reserved:3,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ router_pref:2,
+ home_agent:1,
+ other:1,
+ managed:1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ __u8 managed:1,
+ other:1,
+ home_agent:1,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ router_pref:2,
+ reserved:3;
+#else
+#error "Please fix <asm/byteorder.h>"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+ __be16 rt_lifetime;
+ } u_nd_ra;
+ } icmp6_dataun;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define icmp6_identifier icmp6_dataun.u_echo.identifier
+#define icmp6_sequence icmp6_dataun.u_echo.sequence
+#define icmp6_pointer icmp6_dataun.un_data32[0]
+#define icmp6_mtu icmp6_dataun.un_data32[0]
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define icmp6_unused icmp6_dataun.un_data32[0]
+#define icmp6_maxdelay icmp6_dataun.un_data16[0]
+#define icmp6_router icmp6_dataun.u_nd_advt.router
+#define icmp6_solicited icmp6_dataun.u_nd_advt.solicited
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define icmp6_override icmp6_dataun.u_nd_advt.override
+#define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved
+#define icmp6_hop_limit icmp6_dataun.u_nd_ra.hop_limit
+#define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other
+#define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime
+#define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_ROUTER_PREF_LOW 0x3
+#define ICMPV6_ROUTER_PREF_MEDIUM 0x0
+#define ICMPV6_ROUTER_PREF_HIGH 0x1
+#define ICMPV6_ROUTER_PREF_INVALID 0x2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_DEST_UNREACH 1
+#define ICMPV6_PKT_TOOBIG 2
+#define ICMPV6_TIME_EXCEED 3
+#define ICMPV6_PARAMPROB 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_INFOMSG_MASK 0x80
+#define ICMPV6_ECHO_REQUEST 128
+#define ICMPV6_ECHO_REPLY 129
+#define ICMPV6_MGM_QUERY 130
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_MGM_REPORT 131
+#define ICMPV6_MGM_REDUCTION 132
+#define ICMPV6_NI_QUERY 139
+#define ICMPV6_NI_REPLY 140
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_MLD2_REPORT 143
+#define ICMPV6_DHAAD_REQUEST 144
+#define ICMPV6_DHAAD_REPLY 145
+#define ICMPV6_MOBILE_PREFIX_SOL 146
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_MOBILE_PREFIX_ADV 147
+#define ICMPV6_NOROUTE 0
+#define ICMPV6_ADM_PROHIBITED 1
+#define ICMPV6_NOT_NEIGHBOUR 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_ADDR_UNREACH 3
+#define ICMPV6_PORT_UNREACH 4
+#define ICMPV6_EXC_HOPLIMIT 0
+#define ICMPV6_EXC_FRAGTIME 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_HDR_FIELD 0
+#define ICMPV6_UNK_NEXTHDR 1
+#define ICMPV6_UNK_OPTION 2
+#define ICMPV6_FILTER 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ICMPV6_FILTER_BLOCK 1
+#define ICMPV6_FILTER_PASS 2
+#define ICMPV6_FILTER_BLOCKOTHERS 3
+#define ICMPV6_FILTER_PASSONLY 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct icmp6_filter {
+ __u32 data[8];
+};
+#define MLD2_MODE_IS_INCLUDE 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define MLD2_MODE_IS_EXCLUDE 2
+#define MLD2_CHANGE_TO_INCLUDE 3
+#define MLD2_CHANGE_TO_EXCLUDE 4
+#define MLD2_ALLOW_NEW_SOURCES 5
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define MLD2_BLOCK_OLD_SOURCES 6
+#define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
+#endif