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inet_ntop(3)		   Linux Programmer's Manual		  inet_ntop(3)



NAME
       inet_ntop - Parse network address structures

SYNOPSIS
       #include <sys/types.h>
       #include <sys/socket.h>
       #include <arpa/inet.h>

       const char *inet_ntop(int af, const void *src,
			     char *dst, socklen_t cnt);

DESCRIPTION
       This  function  converts	 the  network  address structure src in the af
       address family into a character string, which is copied to a  character
       buffer dst, which is cnt bytes long.

       inet_ntop(3)  extends  the  inet_ntoa(3)	 function  to support multiple
       address families, inet_ntoa(3) is now considered to  be	deprecated  in
       favor  of  inet_ntop(3).	  The following address families are currently
       supported:

       AF_INET
	      src points to a struct in_addr (network byte order format) which
	      is  converted to an IPv4 network address in the dotted-quad for-
	      mat,  "ddd.ddd.ddd.ddd".	 The  buffer  dst  must	 be  at	 least
	      INET_ADDRSTRLEN bytes long.

       AF_INET6
	      src  points  to  a  struct  in6_addr (network byte order format)
	      which is converted to a representation of this  address  in  the
	      most  appropriate	 IPv6 network address format for this address.
	      The buffer dst must be at least INET6_ADDRSTRLEN bytes long.

RETURN VALUE
       inet_ntop() returns a non-null pointer to dst.	NULL  is  returned  if
       there was an error, with errno set to EAFNOSUPPORT if af was not set to
       a valid address family, or to ENOSPC if the  converted  address	string
       would exceed the size of dst given by the cnt argument.

CONFORMING TO
       POSIX.1-2001.   Note  that  RFC 2553 defines a prototype where the last
       parameter cnt is of type size_t.	 Many systems follow RFC 2553.	 Glibc
       2.0 and 2.1 have size_t, but 2.2 has socklen_t.

SEE ALSO
       inet_pton(3)

BUGS
       AF_INET6 converts IPv6-mapped IPv4 addresses into an IPv6 format.



Linux Man Page			  2000-12-18			  inet_ntop(3)
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