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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.
-.\"
-.Dd March 19, 2012
-.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
-must be greater than or equal to 0
-and less than the current system maximum which
-may be retrieved by the
-.Va net.fibs
-sysctl.
-The system maximum is set in the kernel configuration file with
-.Bd -ragged -offset indent
-.Cd "options ROUTETABLES=" Ns Em N
-.Ed
-.Pp
-or in
-.Pa /boot/loader.conf
-with
-.Pp
-.Dl net.fibs= Ns Qq Em N
-.Pp
-where
-.Em N
-is an integer.
-This maximum is capped at 65536 due to the implementation storing
-the fib number in a 16-bit field in the
-.Xr mbuf 9
-packet header, however it is not suggested that one use such a large number
-as memory is allocated for every FIB regardless of whether it is used, and
-there are places where all FIBs are iterated over.
-.Pp
-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 .