> On 8 Dec 1997, Andi Kleen wrote:
>
> > Just wait about 30s. Linux does delayed deletion of routes now to prevent
> > too much stress of the routing table on big routers that run dynamic routing
> > protocols.
>
> That could be a problem. There are times when route changes *must*
> happen immediately. If diald is managing something other than an
> async PPP link it really needs the route to change on demand or it
> could loose control of the link completely - and hence the cost
> as well.
The route changes happen immediately. The route just changes from 'UP'
to 'DOWN', this means it is not used for routing decisions. When you
add new routes they are chosen over the DOWN route of course.
-A.