init-state auto

if_carp_up="carp145.link.up"
if_carp_down="carp145.link.down"

state auto {
    if $if_carp_up {
        set-state master
    }
    if $if_carp_down {
        set-state backup
    }
}

state master {
    init {
        run "pfctl -f /etc/pf.conf"
        run "route add 0/1 37.16.96.65"
    }
    if $if_carp_down {
        set-state backup
    }
}

state backup {
    init {
        run "pfctl -f /etc/pf.conf"
        run "route del 0/1"
    }
    if $if_carp_up {
        set-state master
    }
}