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+.\" Copyright (c) 2008 Cisco Systems.  All rights reserved.
+.\"    Author: Julian Elischer
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Neither the name of the Cisco Systems nor the names of its employees
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd May 9, 2008
+.Dt SETFIB 2
+.Os
+.Sh NAME
+.Nm setfib
+.Nd set the default FIB (routing table) for the calling process.
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.Ft int
+.Fn setfib "int fib"
+.Sh DESCRIPTION
+The
+.Fn setfib
+system call sets the associated fib for all sockets opened
+subsequent to the call, to be that of the argument
+.Fa fib .
+The
+.Fa fib
+argument
+may be between 0 and the current system maximum which 
+may be retrieved by the 
+.Em net.fibs
+sysctl.
+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 overidden for a socket with the use
+of the SO_SETFIB socket option.
+.Sh RETURN VALUES
+.Rv -std setfib
+.Sh ERRORS
+The
+.Fn kill
+system call
+will fail and no action will be taken and return
+.Er EINVAL
+if the
+.Fa fib
+argument is greater than the current system maximum.
+.El
+.Sh SEE ALSO
+.Xr setsockopt 2 ,
+.Xr setfib 8 
+.Sh STANDARDS
+The
+.Fn setfib
+system call is a FreeBSD extension however similar extensions
+have been added to many other UNIX style kernels.
+.Sh HISTORY
+The
+.Fn setfib
+function appeared in
+.Fx 8.0 .