>Now, when if_down(ifp) happens in if_detach(), protocols should deal
>with that, finding another route, etc, right?  What about if I forcibly
>deleted the default route?  The protocol would deal, right?
>So, it's probably not a problem at the moment...

	PRC_IFDOWN.  I think you are right, if_down() should raise enough
	notification up to tcp/udp/whatever.

itojun