extern uint32_t htonl(uint32_t);
extern uint16_t htons(uint16_t);
extern in_addr_t inet_addr(const char *__cp);
extern int inet_aton(const char *__cp, struct in_addr *__inp);
extern char *inet_ntoa(struct in_addr __in);
extern const char *inet_ntop(int __af, const void *__cp, char *__buf,
			     socklen_t __len);
extern int inet_pton(int __af, const char *__cp, void *__buf);
extern uint32_t ntohl(uint32_t);
extern uint16_t ntohs(uint16_t);

#ifdef NDEBUG
#define assert(expr) ((void)0)
#else
#define assert(expr)	((void) ((expr) ? 0 : (__assert_fail (#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__), 0)))
#endif

extern void __assert_fail(const char *__assertion, const char *__file,
			  unsigned int __line, const char *__function);

#define C_IXOTH	000001
#define C_IWOTH	000002
#define C_IROTH	000004
#define C_IXGRP	000010
#define C_IWGRP	000020
#define C_IRGRP	000040
#define C_IXUSR	000100
#define C_IWUSR	000200
#define C_IRUSR	000400
#define C_ISVTX	001000
#define C_ISGID	002000
#define C_ISUID	004000
#define C_ISFIFO	010000
#define C_ISREG	0100000
#define C_ISCTG	0110000
#define C_ISLNK	0120000
#define C_ISSOCK	0140000
#define C_ISCHR	020000
#define C_ISDIR	040000
#define C_ISBLK	060000
#define MAGIC	"070707"

extern const unsigned short **__ctype_b_loc(void);
extern const int32_t **__ctype_tolower_loc(void);
extern const int32_t **__ctype_toupper_loc(void);
extern int _tolower(int);
extern int _toupper(int);
extern int isalnum(int);
extern int isalpha(int);
extern int isascii(int __c);
extern int isblank(int);
extern int iscntrl(int);
extern int isdigit(int);
extern int isgraph(int);
extern int islower(int);
extern int isprint(int);
extern int ispunct(int);
extern int isspace(int);
extern int isupper(int);
extern int isxdigit(int);
extern int toascii(int __c);
extern int tolower(int __c);
extern int toupper(int __c);

typedef struct __dirstream DIR;

struct dirent {
    long int d_ino;
    off_t d_off;
    unsigned short d_reclen;
    unsigned char d_type;
    char d_name[256];
};
struct dirent64 {
    uint64_t d_ino;
    int64_t d_off;
    unsigned short d_reclen;
    unsigned char d_type;
    char d_name[256];
};
extern int alphasort(const struct dirent **__e1,
		     const struct dirent **__e2);
extern int alphasort64(const struct dirent64 **__e1,
		       const struct dirent64 **__e2);
extern int closedir(DIR * __dirp);
extern int dirfd(DIR * __dirp);
extern DIR *fdopendir(int __fd);
extern DIR *opendir(const char *__name);
extern struct dirent *readdir(DIR * __dirp);
extern struct dirent64 *readdir64(DIR * __dirp);
extern int readdir64_r(DIR * __dirp, struct dirent64 *__entry,
		       struct dirent64 **__result);
extern int readdir_r(DIR * __dirp, struct dirent *__entry,
		     struct dirent **__result);
extern void rewinddir(DIR * __dirp);
extern int scandir(const char *__dir, struct dirent ***__namelist,
		   int (*__selector) (const struct dirent *),
		   int (*__cmp) (const struct dirent *,
				 const struct dirent *));
extern int scandir64(const char *__dir, struct dirent64 ***__namelist,
		     int (*__selector) (const struct dirent64 *),
		     int (*__cmp) (const struct dirent64 *,
				   const struct dirent64 *));
extern void seekdir(DIR * __dirp, long int __pos);
extern long int telldir(DIR * __dirp);

#define __LITTLE_ENDIAN	1234
#define __BIG_ENDIAN	4321
#define BIG_ENDIAN	__BIG_ENDIAN
#define BYTE_ORDER	__BYTE_ORDER
#define LITTLE_ENDIAN	__LITTLE_ENDIAN

extern void err(int __status, const char *__format, ...);
extern void error(int, int, const char *, ...);
extern void errx(int __status, const char *__format, ...);
extern void warn(const char *__format, ...);
extern void warnx(const char *__format, ...);

#define errno	(*__errno_location())

#define EPERM	1		/* Operation not permitted */
#define ECHILD	10		/* No child processes */
#define ENETDOWN	100	/* Network is down */
#define ENETUNREACH	101	/* Network is unreachable */
#define ENETRESET	102	/* Network dropped connection because of reset */
#define ECONNABORTED	103	/* Software caused connection abort */
#define ECONNRESET	104	/* Connection reset by peer */
#define ENOBUFS	105		/* No buffer space available */
#define EISCONN	106		/* Transport endpoint is already connected */
#define ENOTCONN	107	/* Transport endpoint is not connected */
#define ESHUTDOWN	108	/* Cannot send after transport endpoint shutdown */
#define ETOOMANYREFS	109	/* Too many references: cannot splice */
#define EAGAIN	11		/* Try again */
#define ETIMEDOUT	110	/* Connection timed out */
#define ECONNREFUSED	111	/* Connection refused */
#define EHOSTDOWN	112	/* Host is down */
#define EHOSTUNREACH	113	/* No route to host */
#define EALREADY	114	/* Operation already in progress */
#define EINPROGRESS	115	/* Operation now in progress */
#define ESTALE	116		/* Stale NFS file handle */
#define EUCLEAN	117		/* Structure needs cleaning */
#define ENOTNAM	118		/* Not a XENIX named type file */
#define ENAVAIL	119		/* No XENIX semaphores available */
#define ENOMEM	12		/* Out of memory */
#define EISNAM	120		/* Is a named type file */
#define EREMOTEIO	121	/* Remote I/O error */
#define EDQUOT	122		/* Quota exceeded */
#define ENOMEDIUM	123	/* No medium found */
#define EMEDIUMTYPE	124	/* Wrong medium type */
#define ECANCELED	125	/* Operation Canceled */
#define EACCES	13		/* Permission denied */
#define EFAULT	14		/* Bad address */
#define ENOTBLK	15		/* Block device required */
#define EBUSY	16		/* Device or resource busy */
#define EEXIST	17		/* File exists */
#define EXDEV	18		/* Cross-device link */
#define ENODEV	19		/* No such device */
#define ENOENT	2		/* No such file or directory */
#define ENOTDIR	20		/* Not a directory */
#define EISDIR	21		/* Is a directory */
#define EINVAL	22		/* Invalid argument */
#define ENFILE	23		/* File table overflow */
#define EMFILE	24		/* Too many open files */
#define ENOTTY	25		/* Not a typewriter */
#define ETXTBSY	26		/* Text file busy */
#define EFBIG	27		/* File too large */
#define ENOSPC	28		/* No space left on device */
#define ESPIPE	29		/* Illegal seek */
#define ESRCH	3		/* No such process */
#define EROFS	30		/* Read-only file system */
#define EMLINK	31		/* Too many links */
#define EPIPE	32		/* Broken pipe */
#define EDOM	33		/* Math argument out of domain of func */
#define ERANGE	34		/* Math result not representable */
#define EDEADLK	35		/* Resource deadlock would occur */
#define ENAMETOOLONG	36	/* File name too long */
#define ENOLCK	37		/* No record locks available */
#define ENOSYS	38		/* Function not implemented */
#define ENOTEMPTY	39	/* Directory not empty */
#define EINTR	4		/* Interrupted system call */
#define ELOOP	40		/* Too many symbolic links encountered */
#define ENOMSG	42		/* No message of desired type */
#define EIDRM	43		/* Identifier removed */
#define ECHRNG	44		/* Channel number out of range */
#define EL2NSYNC	45	/* Level 2 not synchronized */
#define EL3HLT	46		/* Level 3 halted */
#define EL3RST	47		/* Level 3 reset */
#define ELNRNG	48		/* Link number out of range */
#define EUNATCH	49		/* Protocol driver not attached */
#define EIO	5		/* I/O error */
#define ENOANO	55		/* No anode */
#define EBADRQC	56		/* Invalid request code */
#define EBADSLT	57		/* Invalid slot */
#define EBFONT	59		/* Bad font file format */
#define ENXIO	6		/* No such device or address */
#define ENOSTR	60		/* Device not a stream */
#define ENODATA	61		/* No data available */
#define ETIME	62		/* Timer expired */
#define ENOSR	63		/* Out of streams resources */
#define ENONET	64		/* Machine is not on the network */
#define ENOPKG	65		/* Package not installed */
#define EREMOTE	66		/* Object is remote */
#define ENOLINK	67		/* Link has been severed */
#define EADV	68		/* Advertise error */
#define ESRMNT	69		/* Srmount error */
#define E2BIG	7		/* Argument list too long */
#define ECOMM	70		/* Communication error on send */
#define EPROTO	71		/* Protocol error */
#define EMULTIHOP	72	/* Multihop attempted */
#define EDOTDOT	73		/* RFS specific error */
#define EBADMSG	74		/* Not a data message */
#define EOVERFLOW	75	/* Value too large for defined data type */
#define ENOTUNIQ	76	/* Name not unique on network */
#define EBADFD	77		/* File descriptor in bad state */
#define EREMCHG	78		/* Remote address changed */
#define ELIBACC	79		/* Can not access a needed shared library */
#define ENOEXEC	8		/* Exec format error */
#define ELIBBAD	80		/* Accessing a corrupted shared library */
#define ELIBSCN	81		/* .lib section in a.out corrupted */
#define ELIBMAX	82		/* Attempting to link in too many shared libraries */
#define ELIBEXEC	83	/* Cannot exec a shared library directly */
#define EILSEQ	84		/* Illegal byte sequence */
#define ERESTART	85	/* Interrupted system call should be restarted */
#define ESTRPIPE	86	/* Streams pipe error */
#define EUSERS	87		/* Too many users */
#define ENOTSOCK	88	/* Socket operation on non-socket */
#define EDESTADDRREQ	89	/* Destination address required */
#define EBADF	9		/* Bad file number */
#define EMSGSIZE	90	/* Message too long */
#define EPROTOTYPE	91	/* Protocol wrong type for socket */
#define ENOPROTOOPT	92	/* Protocol not available */
#define EPROTONOSUPPORT	93	/* Protocol not supported */
#define ESOCKTNOSUPPORT	94	/* Socket type not supported */
#define EOPNOTSUPP	95	/* Operation not supported on transport endpoint */
#define EPFNOSUPPORT	96	/* Protocol family not supported */
#define EAFNOSUPPORT	97	/* Address family not supported by protocol */
#define EADDRINUSE	98	/* Address already in use */
#define EADDRNOTAVAIL	99	/* Cannot assign requested address */
#define EWOULDBLOCK	EAGAIN	/* Operation would block */
#define ENOTSUP	EOPNOTSUPP

extern int *__errno_location(void);

#define POSIX_FADV_NORMAL	0
#define O_RDONLY	00
#define O_ACCMODE	0003
#define O_WRONLY	01
#define O_CREAT	0100
#define O_TRUNC	01000
#define O_DSYNC	010000
#define O_RSYNC	010000
#define O_SYNC	010000
#define O_RDWR	02
#define O_EXCL	0200
#define O_APPEND	02000
#define O_ASYNC	020000
#define O_NOCTTY	0400
#define O_NDELAY	04000
#define O_NONBLOCK	04000
#define FD_CLOEXEC	1
#define POSIX_FADV_RANDOM	1
#define POSIX_FADV_SEQUENTIAL	2
#define POSIX_FADV_WILLNEED	3

struct flock {
    short l_type;
    short l_whence;
    off_t l_start;
    off_t l_len;
    pid_t l_pid;
};
struct flock64 {
    short l_type;
    short l_whence;
    loff_t l_start;
    loff_t l_len;
    pid_t l_pid;
};

#define AT_FDCWD	-100
#define AT_SYMLINK_NOFOLLOW	0x100
#define AT_EACCESS	0x200
#define AT_REMOVEDIR	0x200
#define AT_SYMLINK_FOLLOW	0x400

#define F_DUPFD	0
#define F_RDLCK	0
#define F_GETFD	1
#define F_WRLCK	1
#define F_SETSIG	10
#define F_GETSIG	11
#define F_SETFD	2
#define F_UNLCK	2
#define F_GETFL	3
#define F_SETFL	4
#define F_GETLK	5
#define F_SETLK	6
#define F_SETLKW	7
#define F_SETOWN	8
#define F_GETOWN	9

extern int creat(const char *__file, mode_t __mode);
extern int creat64(const char *__file, mode_t __mode);
extern int fcntl(int __fd, int __cmd, ...);
extern int open(const char *__file, int __oflag, ...);
extern int open64(const char *__file, int __oflag, ...);
extern int openat(int __fd, const char *__file, int __oflag, ...);
extern int openat64(int __fd, const char *__file, int __oflag, ...);
extern int posix_fadvise(int __fd, off_t __offset, off_t __len,
			 int __advise);
extern int posix_fadvise64(int __fd, off64_t __offset, off64_t __len,
			   int __advise);
extern int posix_fallocate(int __fd, off_t __offset, off_t __len);
extern int posix_fallocate64(int __fd, off64_t __offset, off64_t __len);

#define MM_HARD	1		/* Source of the condition is hardware. */
#define MM_NRECOV	128	/* Non-recoverable error. */
#define MM_UTIL	16		/* Condition detected by utility. */
#define MM_SOFT	2		/* Source of the condition is software. */
#define MM_PRINT	256	/* Display message in standard error. */
#define MM_OPSYS	32	/* Condition detected by operating system. */
#define MM_FIRM	4		/* Source of the condition is firmware. */
#define MM_CONSOLE	512	/* Display message on system console. */
#define MM_RECOVER	64	/* Recoverable error. */
#define MM_APPL	8		/* Condition detected by application. */

#define MM_NOSEV	0	/* No severity level provided for the message. */
#define MM_HALT	1		/* Error causing application to halt. */
#define MM_ERROR	2	/* Application has encountered a non-fatal fault. */
#define MM_WARNING	3	/* Application has detected unusual non-error condition. */
#define MM_INFO	4		/* Informative message. */

#define MM_NULLACT	((char *) 0)
#define MM_NULLLBL	((char *) 0)
#define MM_NULLTAG	((char *) 0)
#define MM_NULLTXT	((char *) 0)
#define MM_NULLMC	((long int) 0)
#define MM_NULLSEV	0

#define MM_NOTOK	-1	/* The function failed completely. */
#define MM_OK	0		/* The function succeeded. */
#define MM_NOMSG	1	/* The function was unable to generate a message on standard error, but otherwise succeeded. */
#define MM_NOCON	4	/* The function was unable to generate a console message, but otherwise succeeded. */

extern int fmtmsg(long int __classification, const char *__label,
		  int __severity, const char *__text, const char *__action,
		  const char *__tag);

#define FNM_PATHNAME	(1<<0)
#define FNM_NOESCAPE	(1<<1)
#define FNM_PERIOD	(1<<2)
#define FNM_NOMATCH	1

extern int fnmatch(const char *__pattern, const char *__name, int __flags);

#define FTW_D	FTW_D
#define FTW_DNR	FTW_DNR
#define FTW_DP	FTW_DP
#define FTW_F	FTW_F
#define FTW_NS	FTW_NS
#define FTW_SL	FTW_SL
#define FTW_SLN	FTW_SLN

enum {
    FTW_F,
    FTW_D,
    FTW_DNR,
    FTW_NS,
    FTW_SL,
    FTW_DP,
    FTW_SLN
};

enum {
    FTW_PHYS = 1,
    FTW_MOUNT = 2,
    FTW_CHDIR = 4,
    FTW_DEPTH = 8
};

struct FTW {
    int base;
    int level;
};

typedef int (*__ftw_func_t) (const char *__filename,
			     const struct stat * __status, int __flag);
typedef int (*__ftw64_func_t) (const char *__filename,
			       const struct stat64 * __status, int __flag);
typedef int (*__nftw_func_t) (const char *__filename,
			      const struct stat * __status, int __flag,
			      struct FTW * __info);
typedef int (*__nftw64_func_t) (const char *__filename,
				const struct stat64 * __status, int __flag,
				struct FTW * __info);
extern int ftw(const char *__dir, __ftw_func_t __func, int __descriptors);
extern int ftw64(const char *__dir, __ftw64_func_t __func,
		 int __descriptors);
extern int nftw(const char *__dir, __nftw_func_t __func, int __descriptors,
		int __flag);
extern int nftw64(const char *__dir, __nftw64_func_t __func,
		  int __descriptors, int __flag);

#define no_argument	0
#define required_argument	1
#define optional_argument	2

struct option {
    const char *name;
    int has_arg;
    int *flag;
    int val;
};
extern int getopt_long(int ___argc, char *const ___argv[],
		       const char *__shortopts,
		       const struct option *__longopts, int *__longind);
extern int getopt_long_only(int ___argc, char *const ___argv[],
			    const char *__shortopts,
			    const struct option *__longopts,
			    int *__longind);

#define GLOB_ERR	(1<<0)
#define GLOB_MARK	(1<<1)
#define GLOB_BRACE	(1<<10)
#define GLOB_NOMAGIC	(1<<11)
#define GLOB_TILDE	(1<<12)
#define GLOB_ONLYDIR	(1<<13)
#define GLOB_TILDE_CHECK	(1<<14)
#define GLOB_NOSORT	(1<<2)
#define GLOB_DOOFFS	(1<<3)
#define GLOB_NOCHECK	(1<<4)
#define GLOB_APPEND	(1<<5)
#define GLOB_NOESCAPE	(1<<6)
#define GLOB_PERIOD	(1<<7)
#define GLOB_MAGCHAR	(1<<8)
#define GLOB_ALTDIRFUNC	(1<<9)

#define GLOB_NOSPACE	1
#define GLOB_ABORTED	2
#define GLOB_NOMATCH	3
#define GLOB_NOSYS	4

typedef struct {
    size_t gl_pathc;
    char **gl_pathv;
    size_t gl_offs;
    int gl_flags;
    void (*gl_closedir) (void *);
    struct dirent *(*gl_readdir) (void *);
    void *(*gl_opendir) (const char *);
    int (*gl_lstat) (const char *, struct stat *);
    int (*gl_stat) (const char *, struct stat *);
} glob_t;

typedef struct {
    size_t gl_pathc;
    char **gl_pathv;
    size_t gl_offs;
    int gl_flags;
    void (*gl_closedir) (void *);
    struct dirent64 *(*gl_readdir) (void *);
    void *(*gl_opendir) (const char *);
    int (*gl_lstat) (const char *, struct stat *);
    int (*gl_stat) (const char *, struct stat *);
} glob64_t;
extern int glob(const char *__pattern, int __flags,
		int (*__errfunc) (const char *, int), glob_t * __pglob);
extern int glob64(const char *__pattern, int __flags,
		  int (*__errfunc) (const char *, int),
		  glob64_t * __pglob);
extern void globfree(glob_t * __pglob);
extern void globfree64(glob64_t * __pglob);

struct group {
    char *gr_name;
    char *gr_passwd;
    gid_t gr_gid;
    char **gr_mem;
};

extern void endgrent(void);
extern struct group *getgrent(void);
extern int getgrent_r(struct group *__resultbuf, char *__buffer,
		      size_t __buflen, struct group **__result);
extern struct group *getgrgid(gid_t __gid);
extern int getgrgid_r(gid_t __gid, struct group *__resultbuf,
		      char *__buffer, size_t __buflen,
		      struct group **__result);
extern struct group *getgrnam(const char *__name);
extern int getgrnam_r(const char *__name, struct group *__resultbuf,
		      char *__buffer, size_t __buflen,
		      struct group **__result);
extern int getgrouplist(const char *__user, gid_t __group,
			gid_t * __groups, int *__ngroups);
extern int initgroups(const char *__user, gid_t __group);
extern void setgrent(void);
extern int setgroups(size_t __n, const gid_t * __groups);

typedef void *iconv_t;
extern size_t iconv(iconv_t __cd, char **__inbuf, size_t * __inbytesleft,
		    char **__outbuf, size_t * __outbytesleft);
extern int iconv_close(iconv_t __cd);
extern iconv_t iconv_open(const char *__tocode, const char *__fromcode);

typedef lldiv_t imaxdiv_t;

#define __PDP_ENDIAN	3412
#define PDP_ENDIAN	__PDP_ENDIAN

extern intmax_t imaxabs(intmax_t __n);
extern imaxdiv_t imaxdiv(intmax_t __numer, intmax_t __denom);
extern intmax_t strtoimax(const char *__nptr, char **__endptr, int __base);
extern uintmax_t strtoumax(const char *__nptr, char **__endptr,
			   int __base);
extern intmax_t wcstoimax(const wchar_t * __nptr, wchar_t * *__endptr,
			  int __base);
extern uintmax_t wcstoumax(const wchar_t * __nptr, wchar_t * *__endptr,
			   int __base);

#define ABDAY_1	0x20000		/* Sun. */
#define ABDAY_2	0x20001
#define ABDAY_3	0x20002
#define ABDAY_4	0x20003
#define ABDAY_5	0x20004
#define ABDAY_6	0x20005
#define ABDAY_7	0x20006

#define DAY_1	0x20007
#define DAY_2	0x20008
#define DAY_3	0x20009
#define DAY_4	0x2000A
#define DAY_5	0x2000B
#define DAY_6	0x2000C
#define DAY_7	0x2000D

#define ABMON_1	0x2000E
#define ABMON_2	0x2000F
#define ABMON_3	0x20010
#define ABMON_4	0x20011
#define ABMON_5	0x20012
#define ABMON_6	0x20013
#define ABMON_7	0x20014
#define ABMON_8	0x20015
#define ABMON_9	0x20016
#define ABMON_10	0x20017
#define ABMON_11	0x20018
#define ABMON_12	0x20019

#define MON_1	0x2001A
#define MON_2	0x2001B
#define MON_3	0x2001C
#define MON_4	0x2001D
#define MON_5	0x2001E
#define MON_6	0x2001F
#define MON_7	0x20020
#define MON_8	0x20021
#define MON_9	0x20022
#define MON_10	0x20023
#define MON_11	0x20024
#define MON_12	0x20025

#define AM_STR	0x20026
#define PM_STR	0x20027

#define D_T_FMT	0x20028
#define D_FMT	0x20029
#define T_FMT	0x2002A
#define T_FMT_AMPM	0x2002B

#define ERA	0x2002C
#define ERA_D_FMT	0x2002E
#define ALT_DIGITS	0x2002F
#define ERA_D_T_FMT	0x20030
#define ERA_T_FMT	0x20031

#define CODESET	14

#define CRNCYSTR	0x4000F

#define RADIXCHAR	0x10000
#define THOUSEP	0x10001
#define YESEXPR	0x50000
#define NOEXPR	0x50001
#define YESSTR	0x50002
#define NOSTR	0x50003

extern char *nl_langinfo(nl_item __item);

#define basename __xpg_basename

extern char *__xpg_basename(char *__path);
extern char *dirname(char *__path);

extern char *bind_textdomain_codeset(const char *__domainname,
				     const char *__codeset);
extern char *bindtextdomain(const char *__domainname,
			    const char *__dirname);
extern char *dcgettext(const char *__domainname, const char *__msgid,
		       int __category);
extern char *dcngettext(const char *__domainname, const char *__msgid1,
			const char *__msgid2, unsigned long int __n,
			int __category);
extern char *dgettext(const char *__domainname, const char *__msgid);
extern char *dngettext(const char *__domainname, const char *__msgid1,
		       const char *__msgid2, unsigned long int __n);
extern char *gettext(const char *__msgid);
extern char *ngettext(const char *__msgid1, const char *__msgid2,
		      unsigned long int __n);
extern char *textdomain(const char *__domainname);

#define LLONG_MIN	(-LLONG_MAX-1LL)
#define _POSIX_AIO_MAX	1
#define _POSIX_QLIMIT	1
#define _POSIX2_BC_STRING_MAX	1000
#define _POSIX2_CHARCLASS_NAME_MAX	14
#define _POSIX_NAME_MAX	14
#define _POSIX_UIO_MAXIOV	16
#define ULLONG_MAX	18446744073709551615ULL
#define _POSIX2_COLL_WEIGHTS_MAX	2
#define _POSIX_AIO_LISTIO_MAX	2
#define _POSIX_OPEN_MAX	20
#define _POSIX_CLOCKRES_MIN	20000000
#define CHARCLASS_NAME_MAX	2048
#define LINE_MAX	2048
#define _POSIX2_BC_DIM_MAX	2048
#define _POSIX2_LINE_MAX	2048
#define _POSIX_CHILD_MAX	25
#define COLL_WEIGHTS_MAX	255
#define _POSIX2_RE_DUP_MAX	255
#define _POSIX_HOST_NAME_MAX	255
#define _POSIX_MAX_CANON	255
#define _POSIX_MAX_INPUT	255
#define _POSIX_RE_DUP_MAX	255
#define _POSIX_SYMLINK_MAX	255
#define _POSIX_PATH_MAX	256
#define _POSIX_SEM_NSEMS_MAX	256
#define NGROUPS_MAX	32
#define _POSIX2_EXPR_NEST_MAX	32
#define _POSIX_DELAYTIMER_MAX	32
#define _POSIX_MQ_PRIO_MAX	32
#define _POSIX_SIGQUEUE_MAX	32
#define _POSIX_TIMER_MAX	32
#define _POSIX_SEM_VALUE_MAX	32767
#define _POSIX_SSIZE_MAX	32767
#define PATH_MAX	4096
#define _POSIX_ARG_MAX	4096
#define _POSIX_PIPE_BUF	512
#define _POSIX_TZNAME_MAX	6
#define _POSIX_LINK_MAX	8
#define _POSIX_MQ_OPEN_MAX	8
#define _POSIX_NGROUPS_MAX	8
#define _POSIX_RTSIG_MAX	8
#define _POSIX_STREAM_MAX	8
#define _POSIX_SYMLOOP_MAX	8
#define _POSIX_LOGIN_NAME_MAX	9
#define _POSIX_TTY_NAME_MAX	9
#define LLONG_MAX	9223372036854775807LL
#define _POSIX2_BC_BASE_MAX	99
#define _POSIX2_BC_SCALE_MAX	99
#define SSIZE_MAX	LONG_MAX	/* Maximum value of an object of type ssize_t */
#define BC_BASE_MAX	_POSIX2_BC_BASE_MAX
#define BC_DIM_MAX	_POSIX2_BC_DIM_MAX
#define BC_SCALE_MAX	_POSIX2_BC_SCALE_MAX
#define BC_STRING_MAX	_POSIX2_BC_STRING_MAX
#define EXPR_NEST_MAX	_POSIX2_EXPR_NEST_MAX
#define _POSIX_FD_SETSIZE	_POSIX_OPEN_MAX
#define _POSIX_HIWAT	_POSIX_PIPE_BUF

#define MB_LEN_MAX	16

#define SCHAR_MIN	(-128)
#define SCHAR_MAX	127
#define UCHAR_MAX	255
#define CHAR_BIT	8

#define SHRT_MIN	(-32768)
#define SHRT_MAX	32767
#define USHRT_MAX	65535

#define INT_MIN	(-INT_MAX-1)
#define INT_MAX	2147483647
#define UINT_MAX	4294967295U

#define LONG_MIN	(-LONG_MAX-1L)

#define PTHREAD_KEYS_MAX	1024
#define PTHREAD_THREADS_MAX	16384
#define PTHREAD_DESTRUCTOR_ITERATIONS	4

struct lconv {
    char *decimal_point;
    char *thousands_sep;
    char *grouping;
    char *int_curr_symbol;
    char *currency_symbol;
    char *mon_decimal_point;
    char *mon_thousands_sep;
    char *mon_grouping;
    char *positive_sign;
    char *negative_sign;
    char int_frac_digits;
    char frac_digits;
    char p_cs_precedes;
    char p_sep_by_space;
    char n_cs_precedes;
    char n_sep_by_space;
    char p_sign_posn;
    char n_sign_posn;
    char int_p_cs_precedes;
    char int_p_sep_by_space;
    char int_n_cs_precedes;
    char int_n_sep_by_space;
    char int_p_sign_posn;
    char int_n_sign_posn;
};

#define LC_GLOBAL_LOCALE	((locale_t) -1L)
#define LC_CTYPE	0
#define LC_NUMERIC	1
#define LC_TELEPHONE	10
#define LC_MEASUREMENT	11
#define LC_IDENTIFICATION	12
#define LC_TIME	2
#define LC_COLLATE	3
#define LC_MONETARY	4
#define LC_MESSAGES	5
#define LC_ALL	6
#define LC_PAPER	7
#define LC_NAME	8
#define LC_ADDRESS	9

struct __locale_struct {
    struct locale_data *__locales[13];
    const unsigned short *__ctype_b;
    const int *__ctype_tolower;
    const int *__ctype_toupper;
    const char *__names[13];
};
typedef struct __locale_struct *__locale_t;

typedef struct __locale_struct *locale_t;

#define LC_ADDRESS_MASK	(1 << LC_ADDRESS)
#define LC_COLLATE_MASK	(1 << LC_COLLATE)
#define LC_IDENTIFICATION_MASK	(1 << LC_IDENTIFICATION)
#define LC_MEASUREMENT_MASK	(1 << LC_MEASUREMENT)
#define LC_MESSAGES_MASK	(1 << LC_MESSAGES)
#define LC_MONETARY_MASK	(1 << LC_MONETARY)
#define LC_NAME_MASK	(1 << LC_NAME)
#define LC_NUMERIC_MASK	(1 << LC_NUMERIC)
#define LC_PAPER_MASK	(1 << LC_PAPER)
#define LC_TELEPHONE_MASK	(1 << LC_TELEPHONE)
#define LC_TIME_MASK	(1 << LC_TIME)
#define LC_CTYPE_MASK	(1<<LC_CTYPE)
#define LC_ALL_MASK	\
        (LC_CTYPE_MASK| LC_NUMERIC_MASK| LC_TIME_MASK| LC_COLLATE_MASK| LC_MONETARY_MASK|\
         LC_MESSAGES_MASK| LC_PAPER_MASK| LC_NAME_MASK| LC_ADDRESS_MASK| LC_TELEPHONE_MASK|\
         LC_MEASUREMENT_MASK| LC_IDENTIFICATION_MASK)

extern locale_t duplocale(locale_t __dataset);
extern void freelocale(locale_t __dataset);
extern struct lconv *localeconv(void);
extern locale_t newlocale(int __category_mask, const char *__locale,
			  locale_t __base);
extern char *setlocale(int __category, const char *__locale);
extern locale_t uselocale(locale_t __dataset);

extern ssize_t strfmon(char *__s, size_t __maxsize, const char *__format,
		       ...);

#define IF_NAMESIZE	16

#define IFF_UP	0x01		/* Interface is up. */
#define IFF_BROADCAST	0x02	/* Broadcast address valid. */
#define IFF_DEBUG	0x04	/* Turn on debugging. */
#define IFF_LOOPBACK	0x08	/* Is a loopback net. */
#define IFF_POINTOPOINT	0x10	/* Interface is point-to-point link. */
#define IFF_PROMISC	0x100	/* Receive all packets. */
#define IFF_MULTICAST	0x1000	/* Supports multicast. */
#define IFF_NOTRAILERS	0x20	/* Avoid use of trailers. */
#define IFF_RUNNING	0x40	/* Resources allocated. */
#define IFF_NOARP	0x80	/* No address resolution protocol. */

struct if_nameindex {
    unsigned int if_index;	/* 1, 2, ... */
    char *if_name;		/* null terminated name: */
};

struct ifaddr {
    struct sockaddr ifa_addr;	/* Address of interface. */
    union {
	struct sockaddr ifu_broadaddr;
	struct sockaddr ifu_dstaddr;
    } ifa_ifu;
    void *ifa_ifp;
    void *ifa_next;
};

#define ifr_name	ifr_ifrn.ifrn_name	/* interface name */
#define ifr_addr	ifr_ifru.ifru_addr	/* address */
#define ifr_broadaddr	ifr_ifru.ifru_broadaddr	/* broadcast address */
#define ifr_data	ifr_ifru.ifru_data	/* for use by interface */
#define ifr_dstaddr	ifr_ifru.ifru_dstaddr	/* other end of p-p lnk */
#define ifr_flags	ifr_ifru.ifru_flags	/* flags */
#define ifr_hwaddr	ifr_ifru.ifru_hwaddr	/* interface name */
#define ifr_bandwidth	ifr_ifru.ifru_ivalue	/* link bandwidth */
#define ifr_ifindex	ifr_ifru.ifru_ivalue	/* interface index */
#define ifr_metric	ifr_ifru.ifru_ivalue	/* metric */
#define ifr_qlen	ifr_ifru.ifru_ivalue	/* queue length */
#define ifr_mtu	ifr_ifru.ifru_mtu	/* mtu */
#define ifr_netmask	ifr_ifru.ifru_netmask	/* interface net mask */
#define ifr_slave	ifr_ifru.ifru_slave	/* slave device */
#define IFNAMSIZ	IF_NAMESIZE

struct ifreq {
    union {
	char ifrn_name[IFNAMSIZ];
    } ifr_ifrn;
    union {
	struct sockaddr ifru_addr;
	struct sockaddr ifru_dstaddr;
	struct sockaddr ifru_broadaddr;
	struct sockaddr ifru_netmask;
	struct sockaddr ifru_hwaddr;
	short ifru_flags;
	int ifru_ivalue;
	int ifru_mtu;
	char ifru_slave[IFNAMSIZ];
	char ifru_newname[IFNAMSIZ];
	caddr_t ifru_data;
	struct ifmap ifru_map;
    } ifr_ifru;
};

#define ifc_buf	ifc_ifcu.ifcu_buf	/* Buffer address. */
#define ifc_req	ifc_ifcu.ifcu_req	/* Array of structures. */

struct ifconf {
    int ifc_len;
    union {
	caddr_t ifcu_buf;
	struct ifreq *ifcu_req;
    } ifc_ifcu;
};
extern void if_freenameindex(struct if_nameindex *__ptr);
extern char *if_indextoname(unsigned int __ifindex, char *__ifname);
extern struct if_nameindex *if_nameindex(void);
extern unsigned int if_nametoindex(const char *__ifname);

#define h_errno	(*__h_errno_location ())
#define NETDB_INTERNAL	-1	/* See errno. */
#define NETDB_SUCCESS	0	/* No problem. */
#define HOST_NOT_FOUND	1	/* Authoritative Answer Host not found. */
#define IPPORT_RESERVED	1024
#define NI_MAXHOST	1025
#define TRY_AGAIN	2	/* Non-Authoritative Host not found, or SERVERFAIL. */
#define NO_RECOVERY	3	/* Non recoverable errors, FORMERR, REFUSED, NOTIMP. */
#define NI_MAXSERV	32
#define NO_DATA	4		/* Valid name, no data record of requested type. */
#define h_addr	h_addr_list[0]
#define NO_ADDRESS	NO_DATA	/* No address, look for MX record. */

struct servent {
    char *s_name;
    char **s_aliases;
    int s_port;
    char *s_proto;
};
struct hostent {
    char *h_name;
    char **h_aliases;
    int h_addrtype;
    int h_length;
    char **h_addr_list;
};
struct protoent {
    char *p_name;
    char **p_aliases;
    int p_proto;
};
struct netent {
    char *n_name;
    char **n_aliases;
    int n_addrtype;
    unsigned int n_net;
};

#define AI_PASSIVE	0x0001	/* Socket address is intended for `bind' */
#define AI_CANONNAME	0x0002	/* Request for canonical name */
#define AI_NUMERICHOST	0x0004	/* Don't use name resolution */
#define AI_V4MAPPED	0x0008	/* IPv4 mapped addresses are acceptable. */
#define AI_ALL	0x0010		/* Return IPv4 mapped and IPv6 addresses. */
#define AI_ADDRCONFIG	0x0020	/* Use configuration of this host to choose returned address type.. */
#define AI_NUMERICSERV	0x0400	/* Don't use name resolution */

struct addrinfo {
    int ai_flags;
    int ai_family;
    int ai_socktype;
    int ai_protocol;
    socklen_t ai_addrlen;
    struct sockaddr *ai_addr;
    char *ai_canonname;
    struct addrinfo *ai_next;
};

#define NI_NUMERICHOST	1
#define NI_DGRAM	16
#define NI_NUMERICSERV	2
#define NI_NOFQDN	4
#define NI_NAMEREQD	8

#define EAI_BADFLAGS	-1	/* Invalid value for `ai_flags' field. */
#define EAI_MEMORY	-10	/* Memory allocation failure. */
#define EAI_SYSTEM	-11	/* System error returned in `errno'. */
#define EAI_NONAME	-2	/* NAME or SERVICE is unknown. */
#define EAI_AGAIN	-3	/* Temporary failure in name resolution. */
#define EAI_FAIL	-4	/* Non-recoverable failure in name res. */
#define EAI_NODATA	-5	/* No address associated with NAME. */
#define EAI_FAMILY	-6	/* `ai_family' not supported. */
#define EAI_SOCKTYPE	-7	/* `ai_family' not supported. */
#define EAI_SERVICE	-8	/* SERVICE not supported for `ai_socktype'. */
#define EAI_ADDRFAMILY	-9	/* Address family for NAME not supported. */

extern int *__h_errno_location(void);
extern void endprotoent(void);
extern void endservent(void);
extern void freeaddrinfo(struct addrinfo *__ai);
extern const char *gai_strerror(int __ecode);
extern int getaddrinfo(const char *__name, const char *__service,
		       const struct addrinfo *__req,
		       struct addrinfo **__pai);
extern struct hostent *gethostbyaddr(const void *__addr, socklen_t __len,
				     int __type);
extern int gethostbyaddr_r(const void *__addr, socklen_t __len, int __type,
			   struct hostent *__result_buf, char *__buf,
			   size_t __buflen, struct hostent **__result,
			   int *__h_errnop);
extern struct hostent *gethostbyname(const char *__name);
extern struct hostent *gethostbyname2(const char *__name, int __af);
extern int gethostbyname2_r(const char *__name, int __af,
			    struct hostent *__result_buf, char *__buf,
			    size_t __buflen, struct hostent **__result,
			    int *__h_errnop);
extern int gethostbyname_r(const char *__name,
			   struct hostent *__result_buf, char *__buf,
			   size_t __buflen, struct hostent **__result,
			   int *__h_errnop);
extern struct protoent *getprotobyname(const char *__name);
extern int getprotobyname_r(const char *__name,
			    struct protoent *__result_buf, char *__buf,
			    size_t __buflen, struct protoent **__result);
extern struct protoent *getprotobynumber(int __proto);
extern int getprotobynumber_r(int __proto, struct protoent *__result_buf,
			      char *__buf, size_t __buflen,
			      struct protoent **__result);
extern struct protoent *getprotoent(void);
extern int getprotoent_r(struct protoent *__result_buf, char *__buf,
			 size_t __buflen, struct protoent **__result);
extern struct servent *getservbyname(const char *__name,
				     const char *__proto);
extern int getservbyname_r(const char *__name, const char *__proto,
			   struct servent *__result_buf, char *__buf,
			   size_t __buflen, struct servent **__result);
extern struct servent *getservbyport(int __port, const char *__proto);
extern int getservbyport_r(int __port, const char *__proto,
			   struct servent *__result_buf, char *__buf,
			   size_t __buflen, struct servent **__result);
extern struct servent *getservent(void);
extern int getservent_r(struct servent *__result_buf, char *__buf,
			size_t __buflen, struct servent **__result);
extern void setprotoent(int __stay_open);
extern void setservent(int __stay_open);

#define ICMP6_FILTER_WILLBLOCK(type,filterp)	((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
#define ICMP6_FILTER_WILLPASS(type,filterp)	((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
#define ICMP6_FILTER_SETPASS(type,filterp)	((((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))))
#define ICMP6_FILTER_SETBLOCK(type,filterp)	((((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))))
#define ICMP6_DST_UNREACH_NOROUTE	0
#define ICMP6_PARAMPROB_HEADER	0
#define ICMP6_TIME_EXCEED_TRANSIT	0
#define ICMP6_RR_FLAGS_PREVDONE	0x08
#define ICMP6_RR_FLAGS_SPECSITE	0x10
#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO	0x10
#define ICMP6_RR_FLAGS_FORCEAPPLY	0x20
#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK	0x20
#define ND_OPT_PI_FLAG_RADDR	0x20
#define ND_RA_FLAG_HOME_AGENT	0x20
#define ICMP6_RR_FLAGS_REQRESULT	0x40
#define ND_OPT_PI_FLAG_AUTO	0x40
#define ND_RA_FLAG_OTHER	0x40
#define ICMP6_INFOMSG_MASK	0x80
#define ICMP6_RR_FLAGS_TEST	0x80
#define ND_OPT_PI_FLAG_ONLINK	0x80
#define ND_RA_FLAG_MANAGED	0x80
#define ICMP6_DST_UNREACH	1
#define ICMP6_DST_UNREACH_ADMIN	1
#define ICMP6_FILTER	1
#define ICMP6_FILTER_BLOCK	1
#define ICMP6_PARAMPROB_NEXTHEADER	1
#define ICMP6_TIME_EXCEED_REASSEMBLY	1
#define ND_OPT_SOURCE_LINKADDR	1
#define RPM_PCO_ADD	1
#define ICMP6_ECHO_REQUEST	128
#define ICMP6_ECHO_REPLY	129
#define MLD_LISTENER_QUERY	130
#define MLD_LISTENER_REPORT	131
#define MLD_LISTENER_REDUCTION	132
#define ND_ROUTER_SOLICIT	133
#define ND_ROUTER_ADVERT	134
#define ND_NEIGHBOR_SOLICIT	135
#define ND_NEIGHBOR_ADVERT	136
#define ND_REDIRECT	137
#define ICMP6_ROUTER_RENUMBERING	138
#define ICMP6_DST_UNREACH_BEYONDSCOPE	2
#define ICMP6_FILTER_PASS	2
#define ICMP6_PACKET_TOO_BIG	2
#define ICMP6_PARAMPROB_OPTION	2
#define ND_OPT_TARGET_LINKADDR	2
#define RPM_PCO_CHANGE	2
#define ICMP6_DST_UNREACH_ADDR	3
#define ICMP6_FILTER_BLOCKOTHERS	3
#define ICMP6_TIME_EXCEEDED	3
#define ND_OPT_PREFIX_INFORMATION	3
#define RPM_PCO_SETGLOBAL	3
#define ICMP6_DST_UNREACH_NOPORT	4
#define ICMP6_FILTER_PASSONLY	4
#define ICMP6_PARAM_PROB	4
#define ND_OPT_REDIRECTED_HEADER	4
#define ND_OPT_MTU	5
#define ND_OPT_RTR_ADV_INTERVAL	7
#define ND_OPT_HOME_AGENT_INFO	8
#define icmp6_id	icmp6_data16[0]
#define icmp6_maxdelay	icmp6_data16[0]
#define icmp6_seq	icmp6_data16[1]
#define icmp6_mtu	icmp6_data32[0]
#define icmp6_pptr	icmp6_data32[0]
#define icmp6_data16	icmp6_dataun.icmp6_un_data16
#define icmp6_data32	icmp6_dataun.icmp6_un_data32
#define icmp6_data8	icmp6_dataun.icmp6_un_data8
#define ICMP6_FILTER_SETPASSALL(filterp)	memset (filterp, 0, sizeof (struct icmp6_filter));
#define ICMP6_FILTER_SETBLOCKALL(filterp)	memset (filterp, 0xFF, sizeof (struct icmp6_filter));
#define mld_cksum	mld_icmp6_hdr.icmp6_cksum
#define mld_code	mld_icmp6_hdr.icmp6_code
#define mld_maxdelay	mld_icmp6_hdr.icmp6_data16[0]
#define mld_reserved	mld_icmp6_hdr.icmp6_data16[1]
#define mld_type	mld_icmp6_hdr.icmp6_type
#define nd_na_cksum	nd_na_hdr.icmp6_cksum
#define nd_na_code	nd_na_hdr.icmp6_code
#define nd_na_flags_reserved	nd_na_hdr.icmp6_data32[0]
#define nd_na_type	nd_na_hdr.icmp6_type
#define nd_ns_cksum	nd_ns_hdr.icmp6_cksum
#define nd_ns_code	nd_ns_hdr.icmp6_code
#define nd_ns_reserved	nd_ns_hdr.icmp6_data32[0]
#define nd_ns_type	nd_ns_hdr.icmp6_type
#define nd_ra_cksum	nd_ra_hdr.icmp6_cksum
#define nd_ra_code	nd_ra_hdr.icmp6_code
#define nd_ra_router_lifetime	nd_ra_hdr.icmp6_data16[1]
#define nd_ra_curhoplimit	nd_ra_hdr.icmp6_data8[0]
#define nd_ra_flags_reserved	nd_ra_hdr.icmp6_data8[1]
#define nd_ra_type	nd_ra_hdr.icmp6_type
#define nd_rd_cksum	nd_rd_hdr.icmp6_cksum
#define nd_rd_code	nd_rd_hdr.icmp6_code
#define nd_rd_reserved	nd_rd_hdr.icmp6_data32[0]
#define nd_rd_type	nd_rd_hdr.icmp6_type
#define nd_rs_cksum	nd_rs_hdr.icmp6_cksum
#define nd_rs_code	nd_rs_hdr.icmp6_code
#define nd_rs_reserved	nd_rs_hdr.icmp6_data32[0]
#define nd_rs_type	nd_rs_hdr.icmp6_type
#define rr_cksum	rr_hdr.icmp6_cksum
#define rr_code	rr_hdr.icmp6_code
#define rr_seqnum	rr_hdr.icmp6_data32[0]
#define rr_type	rr_hdr.icmp6_type

struct icmp6_filter {
    uint32_t icmp6_filt[8];
};
struct icmp6_hdr {
    uint8_t icmp6_type;
    uint8_t icmp6_code;
    uint16_t icmp6_cksum;
    union {
	uint32_t icmp6_un_data32[1];
	uint16_t icmp6_un_data16[2];
	uint8_t icmp6_un_data8[4];
    } icmp6_dataun;
};
struct nd_router_solicit {
    struct icmp6_hdr nd_rs_hdr;
};
struct nd_router_advert {
    struct icmp6_hdr nd_ra_hdr;
    uint32_t nd_ra_reachable;
    uint32_t nd_ra_retransmit;
};
struct nd_neighbor_solicit {
    struct icmp6_hdr nd_ns_hdr;
    struct in6_addr nd_ns_target;
};
struct nd_neighbor_advert {
    struct icmp6_hdr nd_na_hdr;
    struct in6_addr nd_na_target;
};
struct nd_redirect {
    struct icmp6_hdr nd_rd_hdr;
    struct in6_addr nd_rd_target;
    struct in6_addr nd_rd_dst;
};
struct nd_opt_hdr {
    uint8_t nd_opt_type;
    uint8_t nd_opt_len;
};
struct nd_opt_prefix_info {
    uint8_t nd_opt_pi_type;
    uint8_t nd_opt_pi_len;
    uint8_t nd_opt_pi_prefix_len;
    uint8_t nd_opt_pi_flags_reserved;
    uint32_t nd_opt_pi_valid_time;
    uint32_t nd_opt_pi_preferred_time;
    uint32_t nd_opt_pi_reserved2;
    struct in6_addr nd_opt_pi_prefix;
};
struct nd_opt_rd_hdr {
    uint8_t nd_opt_rh_type;
    uint8_t nd_opt_rh_len;
    uint16_t nd_opt_rh_reserved1;
    uint32_t nd_opt_rh_reserved2;
};
struct nd_opt_mtu {
    uint8_t nd_opt_mtu_type;
    uint8_t nd_opt_mtu_len;
    uint16_t nd_opt_mtu_reserved;
    uint32_t nd_opt_mtu_mtu;
};
struct mld_hdr {
    struct icmp6_hdr mld_icmp6_hdr;
    struct in6_addr mld_addr;
};
struct icmp6_router_renum {
    struct icmp6_hdr rr_hdr;
    uint8_t rr_segnum;
    uint8_t rr_flags;
    uint16_t rr_maxdelay;
    uint32_t rr_reserved;
};
struct rr_pco_match {
    uint8_t rpm_code;
    uint8_t rpm_len;
    uint8_t rpm_ordinal;
    uint8_t rpm_matchlen;
    uint8_t rpm_minlen;
    uint8_t rpm_maxlen;
    uint16_t rpm_reserved;
    struct in6_addr rpm_prefix;
};
struct rr_pco_use {
    uint8_t rpu_uselen;
    uint8_t rpu_keeplen;
    uint8_t rpu_ramask;
    uint8_t rpu_raflags;
    uint32_t rpu_vltime;
    uint32_t rpu_pltime;
    uint32_t rpu_flags;
    struct in6_addr rpu_prefix;
};
struct rr_result {
    uint16_t rrr_flags;
    uint8_t rrr_ordinal;
    uint8_t rrr_matchedlen;
    uint32_t rrr_ifid;
    struct in6_addr rrr_prefix;
};
struct nd_opt_adv_interval {
    uint8_t nd_opt_adv_interval_type;
    uint8_t nd_opt_adv_interval_len;
    uint16_t nd_opt_adv_interval_reserved;
    uint32_t nd_opt_adv_interval_ival;
};
struct nd_opt_home_agent_info {
    uint8_t nd_opt_home_agent_info_type;
    uint8_t nd_opt_home_agent_info_len;
    uint16_t nd_opt_home_agent_info_reserved;
    int16_t nd_opt_home_agent_info_preference;
    uint16_t nd_opt_home_agent_info_lifetime;
};

#define IGMP_MEMBERSHIP_QUERY	0x11
#define IGMP_V1_MEMBERSHIP_REPORT	0x12
#define IGMP_DVMRP	0x13
#define IGMP_PIM	0x14
#define IGMP_TRACE	0x15
#define IGMP_V2_MEMBERSHIP_REPORT	0x16
#define IGMP_V2_LEAVE_GROUP	0x17
#define IGMP_MTRACE_RESP	0x1e
#define IGMP_MTRACE	0x1f
#define IGMP_DELAYING_MEMBER	1
#define IGMP_v1_ROUTER	1
#define IGMP_MAX_HOST_REPORT_DELAY	10
#define IGMP_TIMER_SCALE	10
#define IGMP_IDLE_MEMBER	2
#define IGMP_v2_ROUTER	2
#define IGMP_LAZY_MEMBER	3
#define IGMP_SLEEPING_MEMBER	4
#define IGMP_AWAKENING_MEMBER	5
#define IGMP_MINLEN	8
#define IGMP_HOST_MEMBERSHIP_QUERY	IGMP_MEMBERSHIP_QUERY
#define IGMP_HOST_MEMBERSHIP_REPORT	IGMP_V1_MEMBERSHIP_REPORT
#define IGMP_HOST_LEAVE_MESSAGE	IGMP_V2_LEAVE_GROUP
#define IGMP_HOST_NEW_MEMBERSHIP_REPORT	IGMP_V2_MEMBERSHIP_REPORT

struct igmp {
    u_int8_t igmp_type;
    u_int8_t igmp_code;
    u_int16_t igmp_cksum;
    struct in_addr igmp_group;
};

#define IPPROTO_IP	0
#define IPPROTO_ICMP	1
#define IPPROTO_UDP	17
#define IPPROTO_IGMP	2
#define IPPROTO_RAW	255
#define IPPROTO_IPV6	41
#define IPPROTO_ICMPV6	58
#define IPPROTO_TCP	6

typedef uint16_t in_port_t;

struct in_addr {
    uint32_t s_addr;
};
typedef uint32_t in_addr_t;

#define INADDR_NONE	((in_addr_t) 0xffffffff)
#define INADDR_BROADCAST	(0xffffffff)
#define INADDR_ANY	0
#define INADDR_LOOPBACK	0x7f000001	/* 127.0.0.1 */

#define s6_addr16	in6_u.u6_addr16
#define s6_addr32	in6_u.u6_addr32
#define s6_addr	in6_u.u6_addr8

struct in6_addr {
    union {
	uint8_t u6_addr8[16];
	uint16_t u6_addr16[8];
	uint32_t u6_addr32[4];
    } in6_u;
};

#define IN6ADDR_ANY_INIT	{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
#define IN6ADDR_LOOPBACK_INIT	{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }

#define IN_MULTICAST(a)	((((in_addr_t)(a))&0xf0000000)==0xe0000000)
#define INET_ADDRSTRLEN	16

struct sockaddr_in {
    sa_family_t sin_family;
    unsigned short sin_port;
    struct in_addr sin_addr;
    unsigned char sin_zero[8];
};

#define IN6_IS_ADDR_LINKLOCAL(a)	((((const uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000))
#define IN6_IS_ADDR_SITELOCAL(a)	((((const uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfec00000))
#define IN6_ARE_ADDR_EQUAL(a,b)	((((const uint32_t *) (a))[0] == ((const uint32_t *) (b))[0]) && (((const uint32_t *) (a))[1] == ((const uint32_t *) (b))[1]) && (((const uint32_t *) (a))[2] == ((const uint32_t *) (b))[2]) && (((const uint32_t *) (a))[3] == ((const uint32_t *) (b))[3]))
#define IN6_IS_ADDR_V4COMPAT(a)	((((const uint32_t *) (a))[0] == 0) && (((const uint32_t *) (a))[1] == 0) && (((const uint32_t *) (a))[2] == 0) && (ntohl (((const uint32_t *) (a))[3]) > 1))
#define IN6_IS_ADDR_V4MAPPED(a)	((((const uint32_t *) (a))[0] == 0) && (((const uint32_t *) (a))[1] == 0) && (((const uint32_t *) (a))[2] == htonl (0xffff)))
#define IN6_IS_ADDR_UNSPECIFIED(a)	(((const uint32_t *) (a))[0] == 0 && ((const uint32_t *) (a))[1] == 0 && ((const uint32_t *) (a))[2] == 0 && ((const uint32_t *) (a))[3] == 0)
#define IN6_IS_ADDR_LOOPBACK(a)	(((const uint32_t *) (a))[0] == 0 && ((const uint32_t *) (a))[1] == 0 && ((const uint32_t *) (a))[2] == 0 && ((const uint32_t *) (a))[3] == htonl (1))
#define IN6_IS_ADDR_MULTICAST(a)	(((const uint8_t *) (a))[0] == 0xff)
#define IN6_IS_ADDR_MC_NODELOCAL(a)	(IN6_IS_ADDR_MULTICAST(a) && ((((const uint8_t *) (a))[1] & 0xf) == 0x1))
#define IN6_IS_ADDR_MC_LINKLOCAL(a)	(IN6_IS_ADDR_MULTICAST(a) && ((((const uint8_t *) (a))[1] & 0xf) == 0x2))
#define IN6_IS_ADDR_MC_SITELOCAL(a)	(IN6_IS_ADDR_MULTICAST(a) && ((((const uint8_t *) (a))[1] & 0xf) == 0x5))
#define IN6_IS_ADDR_MC_ORGLOCAL(a)	(IN6_IS_ADDR_MULTICAST(a) && ((((const uint8_t *) (a))[1] & 0xf) == 0x8))
#define IN6_IS_ADDR_MC_GLOBAL(a)	(IN6_IS_ADDR_MULTICAST(a) && ((((const uint8_t *) (a))[1] & 0xf) == 0xe))
#define INET6_ADDRSTRLEN	46

struct sockaddr_in6 {
    unsigned short sin6_family;	/* AF_INET6 */
    uint16_t sin6_port;		/* Transport layer port # */
    uint32_t sin6_flowinfo;	/* IPv6 flow information */
    struct in6_addr sin6_addr;	/* IPv6 address */
    uint32_t sin6_scope_id;	/* scope id (new in RFC2553) */
};

#define SOL_IP	0
#define IP_TOS	1		/* IP type of service and precedence */
#define IPV6_UNICAST_HOPS	16
#define IPV6_MULTICAST_IF	17
#define IPV6_MULTICAST_HOPS	18
#define IPV6_MULTICAST_LOOP	19
#define IP_TTL	2		/* IP time to live */
#define IPV6_JOIN_GROUP	20
#define IPV6_LEAVE_GROUP	21
#define IPV6_V6ONLY	26
#define IP_MULTICAST_IF	32	/* set/get IP multicast i/f */
#define IP_MULTICAST_TTL	33	/* set/get IP multicast ttl */
#define IP_MULTICAST_LOOP	34	/* set/get IP multicast loopback */
#define IP_ADD_MEMBERSHIP	35	/* add an IP group membership */
#define IP_DROP_MEMBERSHIP	36	/* drop an IP group membership */
#define IP_OPTIONS	4	/* IP per-packet options */
#define IPV6_ADD_MEMBERSHIP	IPV6_JOIN_GROUP
#define IPV6_DROP_MEMBERSHIP	IPV6_LEAVE_GROUP

struct ipv6_mreq {
    struct in6_addr ipv6mr_multiaddr;	/* IPv6 multicast address of group */
    int ipv6mr_interface;	/* local IPv6 address of interface */
};
struct ip_mreq {
    struct in_addr imr_multiaddr;	/* IP multicast address of group */
    struct in_addr imr_interface;	/* local IP address of interface */
};
extern int bindresvport(int, struct sockaddr_in *);
extern const struct in6_addr in6addr_any;
extern const struct in6_addr in6addr_loopback;

typedef u_int16_t n_short;
typedef u_int32_t n_long;
typedef u_int32_t n_time;

#define IPOPT_CLASS(o)	((o) & IPOPT_CLASS_MASK)
#define IPOPT_COPIED(o)	((o) & IPOPT_COPY)
#define IPOPT_NUMBER(o)	((o) & IPOPT_NUMBER_MASK)
#define IPOPT_EOL	0
#define IPOPT_OPTVAL	0
#define IPOPT_TS_TSONLY	0
#define IPOPT_CONTROL	0x00
#define IPOPT_SECUR_UNCLASS	0x0000
#define IPOPT_NUMBER_MASK	0x1f
#define IP_OFFMASK	0x1fff
#define IPOPT_RESERVED1	0x20
#define IP_MF	0x2000
#define IPOPT_DEBMEAS	0x40
#define IP_DF	0x4000
#define IPOPT_CLASS_MASK	0x60
#define IPOPT_RESERVED2	0x60
#define IPOPT_SECUR_TOPSECRET	0x6bc5
#define IPOPT_SECUR_EFTO	0x789a
#define IPOPT_COPY	0x80
#define IP_RF	0x8000
#define IPOPT_SECUR_RESTR	0xaf13
#define IPOPT_SECUR_MMMM	0xbc4d
#define IPOPT_SECUR_SECRET	0xd788
#define IPOPT_SECUR_CONFID	0xf135
#define IPOPT_NOP	1
#define IPOPT_OLEN	1
#define IPOPT_TS_TSANDADDR	1
#define IPTTLDEC	1
#define IPOPT_SECURITY	130
#define IPOPT_LSRR	131
#define IPOPT_SATID	136
#define IPOPT_SSRR	137
#define IPOPT_RA	148
#define IPOPT_OFFSET	2
#define MAXTTL	255
#define IPOPT_TS_PRESPEC	3
#define IPOPT_MINOFF	4
#define IPVERSION	4
#define MAX_IPOPTLEN	40
#define IP_MSS	576
#define IPFRAGTTL	60
#define IPDEFTTL	64
#define IP_MAXPACKET	65535
#define IPOPT_TS	68
#define IPOPT_RR	7
#define IPOPT_MEASUREMENT	IPOPT_DEBMEAS
#define IPOPT_END	IPOPT_EOL
#define IPOPT_NOOP	IPOPT_NOP
#define IPOPT_SID	IPOPT_SATID
#define IPOPT_SEC	IPOPT_SECURITY
#define IPOPT_TIMESTAMP	IPOPT_TS

#define IPTOS_TOS(tos)	((tos) & IPTOS_TOS_MASK)
#define IPTOS_LOWCOST	0x02
#define IPTOS_RELIABILITY	0x04
#define IPTOS_THROUGHPUT	0x08
#define IPTOS_LOWDELAY	0x10
#define IPTOS_TOS_MASK	0x1e
#define IPTOS_MINCOST	IPTOS_LOWCOST

#define IPTOS_PREC(tos)	((tos) & IPTOS_PREC_MASK)
#define IPTOS_PREC_MASK	0xe0

#define IP6OPT_TYPE(o)	((o) & 0xc0)
#define IP6OPT_PAD1	0
#define IP6OPT_TYPE_SKIP	0x00
#define IP6OPT_TUNNEL_LIMIT	0x04
#define IP6OPT_ROUTER_ALERT	0x05
#define IP6OPT_TYPE_MUTABLE	0x20
#define IP6OPT_TYPE_DISCARD	0x40
#define IP6OPT_TYPE_FORCEICMP	0x80
#define IP6OPT_TYPE_ICMP	0xc0
#define IP6OPT_JUMBO	0xc2
#define IP6OPT_NSAP_ADDR	0xc3
#define IP6OPT_PADN	1
#define IP6OPT_JUMBO_LEN	6
#define ip6_flow	ip6_ctlun.ip6_un1.ip6_un1_flow
#define ip6_hlim	ip6_ctlun.ip6_un1.ip6_un1_hlim
#define ip6_hops	ip6_ctlun.ip6_un1.ip6_un1_hlim
#define ip6_nxt	ip6_ctlun.ip6_un1.ip6_un1_nxt
#define ip6_plen	ip6_ctlun.ip6_un1.ip6_un1_plen
#define ip6_vfc	ip6_ctlun.ip6_un2_vfc

struct ip6_hdrctl {
    uint32_t ip6_un1_flow;
    uint16_t ip6_un1_plen;
    uint8_t ip6_un1_nxt;
    uint8_t ip6_un1_hlim;
};
struct ip6_hdr {
    struct in6_addr ip6_src;
    struct in6_addr ip6_dst;
};
struct ip6_ext {
    uint8_t ip6e_nxt;
    uint8_t ip6e_len;
};
struct ip6_hbh {
    uint8_t ip6h_nxt;
    uint8_t ip6h_len;
};
struct ip6_dest {
    uint8_t ip6d_nxt;
    uint8_t ip6d_len;
};
struct ip6_rthdr {
    uint8_t ip6r_nxt;
    uint8_t ip6r_len;
    uint8_t ip6r_type;
    uint8_t ip6r_segleft;
};
struct ip6_frag {
    uint8_t ip6f_nxt;
    uint8_t ip6f_reserved;
    uint16_t ip6f_offlg;
    uint32_t ip6f_ident;
};
struct ip6_opt {
    uint8_t ip6o_type;
    uint8_t ip6o_len;
};
struct ip6_opt_jumbo {
    uint8_t ip6oj_type;
    uint8_t ip6oj_len;
    uint8_t ip6oj_jumbo_len[4];
};
struct ip6_opt_nsap {
    uint8_t ip6on_type;
    uint8_t ip6on_len;
    uint8_t ip6on_src_nsap_len;
    uint8_t ip6on_dst_nsap_len;
};
struct ip6_opt_tunnel {
    uint8_t ip6ot_type;
    uint8_t ip6ot_len;
    uint8_t ip6ot_encap_limit;
};
struct ip6_opt_router {
    uint8_t ip6or_type;
    uint8_t ip6or_len;
    uint8_t ip6or_value[2];
};

#define ICMP_INFOTYPE(type)	((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
#define ICMP_ADVLEN(p)	(8 + ((p)->icmp_ip.ip_hl << 2) + 8)
#define ICMP_TSLEN	(8 + 3 * sizeof (n_time))
#define ICMP_ADVLENMIN	(8 + sizeof (struct ip) + 8)
#define ICMP_ECHOREPLY	0
#define ICMP_EXC_TTL	0
#define ICMP_NET_UNREACH	0
#define ICMP_REDIRECT_NET	0
#define ICMP_REDIR_NET	0
#define ICMP_TIMXCEED_INTRANS	0
#define ICMP_UNREACH_NET	0
#define ICMP_EXC_FRAGTIME	1
#define ICMP_HOST_UNREACH	1
#define ICMP_PARAMPROB_OPTABSENT	1
#define ICMP_REDIRECT_HOST	1
#define ICMP_REDIR_HOST	1
#define ICMP_TIMXCEED_REASS	1
#define ICMP_UNREACH_HOST	1
#define ICMP_HOST_ANO	10
#define ICMP_ROUTERSOLICIT	10
#define ICMP_UNREACH_HOST_PROHIB	10
#define ICMP_NET_UNR_TOS	11
#define ICMP_TIME_EXCEEDED	11
#define ICMP_TIMXCEED	11
#define ICMP_UNREACH_TOSNET	11
#define ICMP_HOST_UNR_TOS	12
#define ICMP_MASKLEN	12
#define ICMP_PARAMETERPROB	12
#define ICMP_PARAMPROB	12
#define ICMP_UNREACH_TOSHOST	12
#define ICMP_PKT_FILTERED	13
#define ICMP_TIMESTAMP	13
#define ICMP_TSTAMP	13
#define ICMP_UNREACH_FILTER_PROHIB	13
#define ICMP_PREC_VIOLATION	14
#define ICMP_TIMESTAMPREPLY	14
#define ICMP_TSTAMPREPLY	14
#define ICMP_UNREACH_HOST_PRECEDENCE	14
#define ICMP_INFO_REQUEST	15
#define ICMP_IREQ	15
#define ICMP_PREC_CUTOFF	15
#define ICMP_UNREACH_PRECEDENCE_CUTOFF	15
#define NR_ICMP_UNREACH	15
#define ICMP_INFO_REPLY	16
#define ICMP_IREQREPLY	16
#define ICMP_ADDRESS	17
#define ICMP_MASKREQ	17
#define ICMP_ADDRESSREPLY	18
#define ICMP_MASKREPLY	18
#define ICMP_MAXTYPE	18
#define NR_ICMP_TYPES	18
#define ICMP_PROT_UNREACH	2
#define ICMP_REDIRECT_TOSNET	2
#define ICMP_REDIR_NETTOS	2
#define ICMP_UNREACH_PROTOCOL	2
#define ICMP_DEST_UNREACH	3
#define ICMP_PORT_UNREACH	3
#define ICMP_REDIRECT_TOSHOST	3
#define ICMP_REDIR_HOSTTOS	3
#define ICMP_UNREACH	3
#define ICMP_UNREACH_PORT	3
#define ICMP_FRAG_NEEDED	4
#define ICMP_SOURCEQUENCH	4
#define ICMP_SOURCE_QUENCH	4
#define ICMP_UNREACH_NEEDFRAG	4
#define ICMP_REDIRECT	5
#define ICMP_SR_FAILED	5
#define ICMP_UNREACH_SRCFAIL	5
#define ICMP_NET_UNKNOWN	6
#define ICMP_UNREACH_NET_UNKNOWN	6
#define ICMP_HOST_UNKNOWN	7
#define ICMP_UNREACH_HOST_UNKNOWN	7
#define ICMP_ECHO	8
#define ICMP_HOST_ISOLATED	8
#define ICMP_MINLEN	8
#define ICMP_UNREACH_ISOLATED	8
#define ICMP_NET_ANO	9
#define ICMP_ROUTERADVERT	9
#define ICMP_UNREACH_NET_PROHIB	9
#define icmp_data	icmp_dun.id_data
#define icmp_ip	icmp_dun.id_ip.idi_ip
#define icmp_mask	icmp_dun.id_mask
#define icmp_radv	icmp_dun.id_radv
#define icmp_otime	icmp_dun.id_ts.its_otime
#define icmp_rtime	icmp_dun.id_ts.its_rtime
#define icmp_ttime	icmp_dun.id_ts.its_ttime
#define icmp_gwaddr	icmp_hun.ih_gwaddr
#define icmp_id	icmp_hun.ih_idseq.icd_id
#define icmp_seq	icmp_hun.ih_idseq.icd_seq
#define icmp_nextmtu	icmp_hun.ih_pmtu.ipm_nextmtu
#define icmp_pmvoid	icmp_hun.ih_pmtu.ipm_void
#define icmp_pptr	icmp_hun.ih_pptr
#define icmp_lifetime	icmp_hun.ih_rtradv.irt_lifetime
#define icmp_num_addrs	icmp_hun.ih_rtradv.irt_num_addrs
#define icmp_wpa	icmp_hun.ih_rtradv.irt_wpa
#define icmp_void	icmp_hun.ih_void

struct icmphdr {
    u_int8_t type;
    u_int8_t code;
    u_int16_t checksum;
    union {
	struct {
	    u_int16_t id;
	    u_int16_t sequence;
	} echo;
	u_int32_t gateway;
	struct {
	    u_int16_t __unused;
	    u_int16_t mtu;
	} frag;
    } un;
};
struct icmp_ra_addr {
    u_int32_t ira_addr;
    u_int32_t ira_preference;
};
struct ih_idseq {
    u_int16_t icd_id;
    u_int16_t icd_seq;
};
struct ih_pmtu {
    u_int16_t ipm_void;
    u_int16_t ipm_nextmtu;
};
struct ih_rtradv {
    u_int8_t irt_num_addrs;
    u_int8_t irt_wpa;
    u_int16_t irt_lifetime;
};
struct icmp {
    u_int8_t icmp_type;
    u_int8_t icmp_code;
    u_int16_t icmp_cksum;
    union {
	u_int16_t ih_pptr;
	struct in_addr ih_gwaddr;
	struct ih_idseq ih_idseq;
	u_int32_t ih_void;
	struct ih_pmtu ih_pmtu;
	struct ih_rtradv ih_rtradv;
    } icmp_hun;
    union {
	struct {
	    u_int32_t its_otime;
	    u_int32_t its_rtime;
	    u_int32_t its_ttime;
	} id_ts;
	struct {
	    struct ip idi_ip;
	} id_ip;
	struct icmp_ra_addr id_radv;
	u_int32_t id_mask;
	u_int8_t id_data[1];
    } icmp_dun;
};

#define TCPOLEN_TSTAMP_APPA	(TCPOLEN_TIMESTAMP+2)
#define TCPOPT_TSTAMP_HDR	(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
#define TCPOPT_EOL	0
#define TCPI_OPT_TIMESTAMPS	1
#define TCPOPT_NOP	1
#define TCP_NODELAY	1
#define TCPOLEN_TIMESTAMP	10
#define TCP_WINDOW_CLAMP	10
#define TCP_INFO	11
#define TCP_QUICKACK	12
#define TCP_CONGESTION	13
#define TCP_MAX_WINSHIFT	14
#define TCPI_OPT_SACK	2
#define TCPOLEN_SACK_PERMITTED	2
#define TCPOPT_MAXSEG	2
#define TCP_MAXSEG	2
#define TCPOLEN_WINDOW	3
#define TCPOPT_WINDOW	3
#define TCP_CORK	3
#define TCPI_OPT_WSCALE	4
#define TCPOLEN_MAXSEG	4
#define TCPOPT_SACK_PERMITTED	4
#define TCP_KEEPIDLE	4
#define TCPOPT_SACK	5
#define TCP_KEEPINTVL	5
#define TCP_MSS	512
#define SOL_TCP	6
#define TCP_KEEPCNT	6
#define TCP_MAXWIN	65535
#define TCP_SYNCNT	7
#define TCPI_OPT_ECN	8
#define TCPOPT_TIMESTAMP	8
#define TCP_LINGER2	8
#define TCP_DEFER_ACCEPT	9

enum tcp_ca_state {
    TCP_CA_Open,
    TCP_CA_Disorder,
    TCP_CA_CWR,
    TCP_CA_Recovery,
    TCP_CA_Loss
};
struct tcp_info {
    uint8_t tcpi_state;
    uint8_t tcpi_ca_state;
    uint8_t tcpi_retransmits;
    uint8_t tcpi_probes;
    uint8_t tcpi_backoff;
    uint8_t tcpi_options;
    uint8_t tcpi_snd_wscale:4;
    uint8_t tcpi_rcv_wscale:4;
    uint32_t tcpi_rto;
    uint32_t tcpi_ato;
    uint32_t tcpi_snd_mss;
    uint32_t tcpi_rcv_mss;
    uint32_t tcpi_unacked;
    uint32_t tcpi_sacked;
    uint32_t tcpi_lost;
    uint32_t tcpi_retrans;
    uint32_t tcpi_fackets;
    uint32_t tcpi_last_data_sent;
    uint32_t tcpi_last_ack_sent;
    uint32_t tcpi_last_data_recv;
    uint32_t tcpi_last_ack_recv;
    uint32_t tcpi_pmtu;
    uint32_t tcpi_rcv_ssthresh;
    uint32_t tcpi_rtt;
    uint32_t tcpi_rttvar;
    uint32_t tcpi_snd_ssthresh;
    uint32_t tcpi_snd_cwnd;
    uint32_t tcpi_advmss;
    uint32_t tcpi_reordering;
};
enum {
    TCP_ESTABLISHED = 1,
    TCP_SYN_SENT = 2,
    TCP_SYN_RECV = 3,
    TCP_FIN_WAIT1 = 4,
    TCP_FIN_WAIT2 = 5,
    TCP_TIME_WAIT = 6,
    TCP_CLOSE = 7,
    TCP_CLOSE_WAIT = 8,
    TCP_LAST_ACK = 9,
    TCP_LISTEN = 10,
    TCP_CLOSING = 11
};

#define SOL_UDP	17

struct udphdr {
    u_int16_t source;
    u_int16_t dest;
    u_int16_t len;
    u_int16_t check;
};

#define NL_CAT_LOCALE	1
#define NL_SETD	1

typedef void *nl_catd;

typedef int nl_item;
extern int catclose(nl_catd __catalog);
extern char *catgets(nl_catd __catalog, int __set, int __number,
		     const char *__string);
extern nl_catd catopen(const char *__cat_name, int __flag);

extern int poll(struct pollfd *__fds, nfds_t __nfds, int __timeout);

extern int forkpty(int *__amaster, char *__name, struct termios *__termp,
		   struct winsize *__winp);
extern int openpty(int *__amaster, int *__aslave, char *__name,
		   struct termios *__termp, struct winsize *__winp);

struct passwd {
    char *pw_name;
    char *pw_passwd;
    uid_t pw_uid;
    gid_t pw_gid;
    char *pw_gecos;
    char *pw_dir;
    char *pw_shell;
};
extern void endpwent(void);
extern struct passwd *getpwent(void);
extern int getpwent_r(struct passwd *__resultbuf, char *__buffer,
		      size_t __buflen, struct passwd **__result);
extern struct passwd *getpwnam(const char *__name);
extern int getpwnam_r(const char *__name, struct passwd *__resultbuf,
		      char *__buffer, size_t __buflen,
		      struct passwd **__result);
extern struct passwd *getpwuid(uid_t __uid);
extern int getpwuid_r(uid_t __uid, struct passwd *__resultbuf,
		      char *__buffer, size_t __buflen,
		      struct passwd **__result);
extern void setpwent(void);