#define	AF_INET		PF_INET
#define	AF_INET6	PF_INET6
#define	PF_INET		2	/* IP protocol family.  */
#define	PF_INET6	10	/* IP version 6.  */

/* Internet address.  */
typedef uint32_t in_addr_t;
struct in_addr
  {
    in_addr_t s_addr;
  };

/* IPv6 address */
struct in6_addr
  {
    union
      {
	uint8_t	__u6_addr8[16];
#if defined __USE_MISC || defined __USE_GNU
	uint16_t __u6_addr16[8];
	uint32_t __u6_addr32[4];
#endif
      } __in6_u;
#define s6_addr			__in6_u.__u6_addr8
#if defined __USE_MISC || defined __USE_GNU
# define s6_addr16		__in6_u.__u6_addr16
# define s6_addr32		__in6_u.__u6_addr32
#endif
  };

/* Structure describing a generic socket address.  */

struct sockaddr
  {
    __SOCKADDR_COMMON (sa_);	/* Common data: address family and length.  */
    char sa_data[14];		/* Address data.  */
  };


/* Structure describing an Internet socket address.  */
struct sockaddr_in
  {
    __SOCKADDR_COMMON (sin_);
    in_port_t sin_port;			/* Port number.  */
    struct in_addr sin_addr;		/* Internet address.  */

    /* Pad to size of `struct sockaddr'.  */
    unsigned char sin_zero[sizeof (struct sockaddr) -
			   __SOCKADDR_COMMON_SIZE -
			   sizeof (in_port_t) -
			   sizeof (struct in_addr)];
  };


struct sockaddr_in6
  {
    __SOCKADDR_COMMON (sin6_);
    in_port_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;	/* IPv6 scope-id */
  };


/* Structure large enough to hold any socket address (with the historical
   exception of AF_UNIX).  We reserve 128 bytes.  */
#define __ss_aligntype	unsigned long int
#define _SS_SIZE	128
#define _SS_PADSIZE	(_SS_SIZE - (2 * sizeof (__ss_aligntype)))

struct sockaddr_storage
  {
    __SOCKADDR_COMMON (ss_);	/* Address family, etc.  */
    __ss_aligntype __ss_align;	/* Force desired alignment.  */
    char __ss_padding[_SS_PADSIZE];
  };