We want to add some additional routes to networks reachable via the dial on 
demand ippp0 device. We created a routes-ippp0 file and the routes are there as 
soon as we have connected the device at least one time.

If the device wasn't connected before, there are no routes. The other networks 
are not reachable, because the routes are set up _after_ the connection. 
Shouldn't they initialized while the device is initialized?

Probably affects other dial on demand devices like ppp0 too, but haven't tried 
that yet.