diff --git a/libc/kernel/uapi/linux/in.h b/libc/kernel/uapi/linux/in.h
index 6a6d16e..03fdf99 100644
--- a/libc/kernel/uapi/linux/in.h
+++ b/libc/kernel/uapi/linux/in.h
@@ -19,206 +19,226 @@
 #ifndef _UAPI_LINUX_IN_H
 #define _UAPI_LINUX_IN_H
 #include <linux/types.h>
-#include <linux/socket.h>
+#include <linux/libc-compat.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#include <linux/socket.h>
+#if __UAPI_DEF_IN_IPPROTO
 enum {
   IPPROTO_IP = 0,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_IP IPPROTO_IP
   IPPROTO_ICMP = 1,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_ICMP IPPROTO_ICMP
   IPPROTO_IGMP = 2,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_IGMP IPPROTO_IGMP
   IPPROTO_IPIP = 4,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_IPIP IPPROTO_IPIP
   IPPROTO_TCP = 6,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_TCP IPPROTO_TCP
   IPPROTO_EGP = 8,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_EGP IPPROTO_EGP
   IPPROTO_PUP = 12,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_PUP IPPROTO_PUP
   IPPROTO_UDP = 17,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_UDP IPPROTO_UDP
   IPPROTO_IDP = 22,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_IDP IPPROTO_IDP
   IPPROTO_TP = 29,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_TP IPPROTO_TP
   IPPROTO_DCCP = 33,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_DCCP IPPROTO_DCCP
   IPPROTO_IPV6 = 41,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_IPV6 IPPROTO_IPV6
   IPPROTO_RSVP = 46,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_RSVP IPPROTO_RSVP
   IPPROTO_GRE = 47,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_GRE IPPROTO_GRE
   IPPROTO_ESP = 50,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_ESP IPPROTO_ESP
   IPPROTO_AH = 51,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_AH IPPROTO_AH
   IPPROTO_MTP = 92,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_MTP IPPROTO_MTP
   IPPROTO_BEETPH = 94,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_BEETPH IPPROTO_BEETPH
   IPPROTO_ENCAP = 98,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_ENCAP IPPROTO_ENCAP
   IPPROTO_PIM = 103,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_PIM IPPROTO_PIM
   IPPROTO_COMP = 108,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_COMP IPPROTO_COMP
   IPPROTO_SCTP = 132,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_SCTP IPPROTO_SCTP
   IPPROTO_UDPLITE = 136,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_UDPLITE IPPROTO_UDPLITE
+  IPPROTO_MPLS = 137,
+#define IPPROTO_MPLS IPPROTO_MPLS
   IPPROTO_RAW = 255,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPPROTO_RAW IPPROTO_RAW
   IPPROTO_MAX
 };
-struct in_addr {
+#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#if __UAPI_DEF_IN_ADDR
+struct in_addr {
   __be32 s_addr;
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
 #define IP_TOS 1
 #define IP_TTL 2
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_HDRINCL 3
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_OPTIONS 4
 #define IP_ROUTER_ALERT 5
 #define IP_RECVOPTS 6
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_RETOPTS 7
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_PKTINFO 8
 #define IP_PKTOPTIONS 9
 #define IP_MTU_DISCOVER 10
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_RECVERR 11
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_RECVTTL 12
 #define IP_RECVTOS 13
 #define IP_MTU 14
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_FREEBIND 15
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_IPSEC_POLICY 16
 #define IP_XFRM_POLICY 17
 #define IP_PASSSEC 18
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_TRANSPARENT 19
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_RECVRETOPTS IP_RETOPTS
 #define IP_ORIGDSTADDR 20
 #define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_MINTTL 21
-#define IP_NODEFRAG 22
-#define IP_PMTUDISC_DONT 0
-#define IP_PMTUDISC_WANT 1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IP_NODEFRAG 22
+#define IP_CHECKSUM 23
+#define IP_BIND_ADDRESS_NO_PORT 24
+#define IP_PMTUDISC_DONT 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IP_PMTUDISC_WANT 1
 #define IP_PMTUDISC_DO 2
 #define IP_PMTUDISC_PROBE 3
 #define IP_PMTUDISC_INTERFACE 4
-#define IP_PMTUDISC_OMIT 5
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IP_PMTUDISC_OMIT 5
 #define IP_MULTICAST_IF 32
 #define IP_MULTICAST_TTL 33
 #define IP_MULTICAST_LOOP 34
-#define IP_ADD_MEMBERSHIP 35
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IP_ADD_MEMBERSHIP 35
 #define IP_DROP_MEMBERSHIP 36
 #define IP_UNBLOCK_SOURCE 37
 #define IP_BLOCK_SOURCE 38
-#define IP_ADD_SOURCE_MEMBERSHIP 39
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IP_ADD_SOURCE_MEMBERSHIP 39
 #define IP_DROP_SOURCE_MEMBERSHIP 40
 #define IP_MSFILTER 41
 #define MCAST_JOIN_GROUP 42
-#define MCAST_BLOCK_SOURCE 43
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define MCAST_BLOCK_SOURCE 43
 #define MCAST_UNBLOCK_SOURCE 44
 #define MCAST_LEAVE_GROUP 45
 #define MCAST_JOIN_SOURCE_GROUP 46
-#define MCAST_LEAVE_SOURCE_GROUP 47
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define MCAST_LEAVE_SOURCE_GROUP 47
 #define MCAST_MSFILTER 48
 #define IP_MULTICAST_ALL 49
 #define IP_UNICAST_IF 50
-#define MCAST_EXCLUDE 0
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define MCAST_EXCLUDE 0
 #define MCAST_INCLUDE 1
 #define IP_DEFAULT_MULTICAST_TTL 1
 #define IP_DEFAULT_MULTICAST_LOOP 1
-struct ip_mreq {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#if __UAPI_DEF_IP_MREQ
+struct ip_mreq {
   struct in_addr imr_multiaddr;
   struct in_addr imr_interface;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct ip_mreqn {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct in_addr imr_multiaddr;
   struct in_addr imr_address;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   int imr_ifindex;
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct ip_mreq_source {
   __be32 imr_multiaddr;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __be32 imr_interface;
   __be32 imr_sourceaddr;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct ip_msfilter {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __be32 imsf_multiaddr;
   __be32 imsf_interface;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __u32 imsf_fmode;
   __u32 imsf_numsrc;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __be32 imsf_slist[1];
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IP_MSFILTER_SIZE(numsrc) (sizeof(struct ip_msfilter) - sizeof(__u32) + (numsrc) * sizeof(__u32))
 struct group_req {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __u32 gr_interface;
   struct __kernel_sockaddr_storage gr_group;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct group_source_req {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __u32 gsr_interface;
   struct __kernel_sockaddr_storage gsr_group;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct __kernel_sockaddr_storage gsr_source;
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct group_filter {
   __u32 gf_interface;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct __kernel_sockaddr_storage gf_group;
   __u32 gf_fmode;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __u32 gf_numsrc;
   struct __kernel_sockaddr_storage gf_slist[1];
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 #define GROUP_FILTER_SIZE(numsrc) (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
+#if __UAPI_DEF_IN_PKTINFO
 struct in_pktinfo {
   int ipi_ifindex;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   struct in_addr ipi_spec_dst;
   struct in_addr ipi_addr;
 };
-#define __SOCK_SIZE__ 16
+#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#if __UAPI_DEF_SOCKADDR_IN
+#define __SOCK_SIZE__ 16
 struct sockaddr_in {
   __kernel_sa_family_t sin_family;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __be16 sin_port;
   struct in_addr sin_addr;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) - sizeof(unsigned short int) - sizeof(struct in_addr)];
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define sin_zero __pad
+#endif
+#if __UAPI_DEF_IN_CLASS
 #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IN_CLASSA_NET 0xff000000
@@ -256,5 +276,6 @@
 #define INADDR_ALLRTRS_GROUP 0xe0000002U
 #define INADDR_MAX_LOCAL_GROUP 0xe00000ffU
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif
 #include <asm/byteorder.h>
 #endif