> On 22 May 2019, at 04:53, The Doctor via freebsd-questions <freebsd-questions at freebsd.org> wrote: > > How do I set up in /etc/rc.conf an eth1 that will > attach ifself to the back of the router in my packet filtering (pf) box, > namely the $ext_if ? > You want to set a macro in your pf.conf, as documented in its man page. — Kristof