Title : How to add a route through a specific interface on FreeBSD 10
Author: Solène
Date  : 02 May 2016
Tags  : freebsd10 network

If someday under FreeBSD you have a system with multiple IP address on
the same network and you need to use a specific IP for a route, you
have to use the -ifa parameter in the route command.

In our example, we have to use the address **192.168.1.140** to access
the network **192.168.30.0** through the router **192.168.1.1**, this
is as easy as the following.

    route add -net 192.168.30.0 192.168.1.1 -ifa 192.168.1.140

You can add this specific route like any other route in your rc.conf
as usual, just add the -ifa X.X.X.X parameter.