NAME

       setfib — set the default FIB (routing table) for the calling process.

LIBRARY

       Standard C Library (libc, -lc)

SYNOPSIS

       #include <sys/socket.h>

       int
       setfib(int fib);

DESCRIPTION

       The  setfib()  system  call  sets the associated fib for all sockets opened subsequent to the call, to be
       that of the argument fib.  The fib argument must be greater than or equal to 0 and less than the  current
       system  maximum  which  may be retrieved by the net.fibs sysctl.  The system maximum is set in the kernel
       configuration file with

             options   ROUTETABLES=N

       or in /boot/loader.conf with

             net.fibs="N"

       where N is an integer.  However, this maximum is capped at 16 due to the implementation storing  the  fib
       number in a 4-bit field in mbuf(9) flags.  The default fib of the process will be applied to all protocol
       families that support multiple fibs, and ignored by those that do not.  The default fib for a process may
       be overridden for a socket with the use of the SO_SETFIB socket option.

RETURN VALUES

       The  setfib()  function  returns  the  value  0 if successful; otherwise the value -1 is returned and the
       global variable errno is set to indicate the error.

ERRORS

       The setfib() system call will fail and no action will be taken and return EINVAL if the fib  argument  is
       greater than the current system maximum.

SEE ALSO

       setfib(1), setsockopt(2)

STANDARDS

       The  setfib() system call is a FreeBSD extension however similar extensions have been added to many other
       Unix style kernels.

HISTORY

       The setfib() function appeared in FreeBSD 7.1.

Debian                                           March 19, 2012                                        SETFIB(2)