We must act on the causes of suffering and thus be freed.
Henceforth, as far as Nirodha is concerned, it is the way to eradicate suffering. Now that the source of suffering is known, we must at all costs seek to avoid it or even eliminate it definitively and thus put an end to all suffering. We must act on the causes of suffering and thus be freed. Not being in ignorance already allows us to put ourselves on the path to liberation from suffering.