[patch] interface routes

[sthaug at nethelp.no]

> This brings up a long standing sore point of our routing code
> which this patch makes more pronounced.  When an interface link
> state is down I don't want the route to it to persist but to
> become inactive so another path can be chosen.  This the very
> point of running a routing daemon.  So on the link-down event
> the installed interface routes should be removed from the routing
> table.  The configured addresses though should persist and the
> interface routes re-installed on a link-up event.  What's your
> opinion on it?

Yes please! This is what I take for granted on my routers.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no