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FreeBSD 11.0 - man page for setfib (freebsd section 1)

SETFIB(1)						    BSD General Commands Manual 						 SETFIB(1)

NAME
setfib -- execute a utility with an altered default network view
SYNOPSIS
setfib [-F] fib utility [argument ...]
DESCRIPTION
The setfib utility runs another utility with a different routing table. The table number fib will be used by default for all sockets started by this process or descendants.
ENVIRONMENT
The PATH environment variable is used to locate the requested utility if the name contains no '/' characters.
EXIT STATUS
If utility is invoked, the exit status of setfib is the exit status of utility. An exit status of 126 indicates utility was found, but could not be executed. An exit status of 127 indicates utility could not be found.
EXAMPLES
Run netstat(1) to view the second routing table. setfib -F 1 netstat -rn or setfib 1 netstat -rn or setfib -1 netstat -rn
SEE ALSO
setfib(2), setsockopt(2)
STANDARDS
The setfib utility is a FreeBSD specific extension. However, many UNIX-like systems have an equivalent function.
HISTORY
The setfib utility appeared in FreeBSD 7.1.
BSD
October 20, 2008 BSD