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How to add a route through a specific interface on FreeBSD (10 to 13)

Written by Solène, on 02 May 2016.
Tags: #freebsd #networking

Comments on Fediverse/Mastodon

If one day under FreeBSD (from 10 to 13 at least) you have a system with multiple IP addresses 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 to access the network through the router, this is as easy as the following.

route add -net -ifa

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.