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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 August 8, 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
.In sys/socket.h
.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
.Va 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 overridden for a socket with the use
of the
.Dv SO_SETFIB
socket option.
.Sh RETURN VALUES
.Rv -std setfib
.Sh ERRORS
The
.Fn setfib
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.
.Sh SEE ALSO
.Xr setfib 1 ,
.Xr setsockopt 2
.Sh STANDARDS
The
.Fn setfib
system call is a
.Fx
extension however similar extensions
have been added to many other
.Ux style kernels.
.Sh HISTORY
The
.Fn setfib
function appeared in
.Fx 7.1 .
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