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



NAME
       inet_ntop - convert IPv4 and IPv6 addresses from binary to text form

SYNOPSIS
       #include <arpa/inet.h>

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

DESCRIPTION
       This  function  converts	 the  network  address structure src in the af
       address family into a character string.	The resulting string is copied
       to the buffer pointed to by dst, which must be a non-null pointer.  The
       caller specifies the number of bytes available in this  buffer  in  the
       argument size.

       inet_ntop()  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().	 The  following address families are currently
       supported:

       AF_INET
	      src points to a struct in_addr (in network byte order) which  is
	      converted	 to an IPv4 network address in the dotted-decimal 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 (in network byte order) which is
	      converted to a representation of this address in the most appro-
	      priate IPv6 network address format for this address.  The buffer
	      dst must be at least INET6_ADDRSTRLEN bytes long.

RETURN VALUE
       On success, inet_ntop() returns a non-null pointer  to  dst.   NULL  is
       returned if there was an error, with errno set to indicate the error.

ERRORS
       EAFNOSUPPORT
	      af was not a valid address family.

       ENOSPC The  converted  address  string  would  exceed the size given by
	      size.

ATTRIBUTES
       For  an	explanation  of	 the  terms  used   in	 this	section,   see
       attributes(7).

       +------------+---------------+----------------+
       |Interface   | Attribute	    | Value	     |
       +------------+---------------+----------------+
       |inet_ntop() | Thread safety | MT-Safe locale |
       +------------+---------------+----------------+

CONFORMING TO
       POSIX.1-2001,  POSIX.1-2008.   Note  that  RFC 2553 defines a prototype
       where the last argument size is of type size_t.	 Many  systems	follow
       RFC 2553.   Glibc  2.0  and  2.1	 have  size_t,	but 2.2 and later have
       socklen_t.

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

EXAMPLE
       See inet_pton(3).

SEE ALSO
       getnameinfo(3), inet(3), inet_pton(3)

COLOPHON
       This page is part of release 4.10 of the Linux  man-pages  project.   A
       description  of	the project, information about reporting bugs, and the
       latest	 version    of	  this	  page,	   can	   be	  found	    at
       https://www.kernel.org/doc/man-pages/.



Linux				  2015-08-08			  INET_NTOP(3)