osf1 man page for if_nameindex

if_nameindex(3) 					     Library Functions Manual						   if_nameindex(3)

NAME
       if_nameindex - Returns an array of all interface names and indexes

LIBRARY
       Standard C Library (libc.so, libc.a)

SYNOPSIS
       #include <net/if.h>

       struct if_nameindex *if_nameindex ( void );

DESCRIPTION
       The  if_nameindex()  function  dynamically  allocates  memory for an array of if_nameindex structures, one structure for each interface.  A
       structure with a zero (0) if_index value (0) and a NULL if_name value indicates the end of the array.

       You must define the following if_nameindex structure prior to a call to if_nameindex: struct if_nameindex {
	  unsigned int	 if_index;
	  char		 *if_name; };

       To free memory allocated by this function, use the if_freenameindex function.

RETURN VALUES
       Upon successful conversion, the if_nameindex() function returns a pointer to the first structure in the array of if_nameindex structures.

RELATED INFORMATION
       Functions: if_freenameindex(3), if_indextoname(3), if_nametoindex(3).  delim off

																   if_nameindex(3)