In some complex network, there are more than one gateway and even there are multiple route to a single destination. Maintaining by hand the different routes is difficult and error prone.
In this case, the routed daemon is a given. Please be careful
with this. Most routed daemon available on the net were at some
point broken and were loosing routes. I have no confirmation
that a working routed is now available. Check out gated
as a replacement if you are experiencing strange route loss
with routed.
I guess this will be solved soon. If you know about it, please inform me!