The if_freenameindex() function shall free the memory allocated
by if_nameindex(). The ptr argument shall be a pointer
that was returned by if_nameindex(). After if_freenameindex()
has been called, the application
shall not use the array of which ptr is the address.
No errors are defined.
The following sections are informative.
getsockopt() , if_indextoname() , if_nameindex()
, if_nametoindex() , setsockopt() , the Base Definitions
volume of IEEE Std 1003.1-2001, <net/if.h>
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online at