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RedHat 9 (Linux i386) - man page for inet_ntop (redhat section 3)

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, size_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 format, "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.

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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