On Tue, 28 Jun 2005 20:57:04 +0800, cigarette Chan said: > i add a route to the kernel > eg: # route add -net XXX.XXX.XXX.XXX/24 gw XXX.XXX.XXX.XXX dev eth1 > > but after i restart eth1 > > #ifdown eth1 > #ifup eth1 > > the route disappear,this make me a lot of troubles.i have several > interfaces,and i have to > re-add all of these routes... > > Is there any way or patches to make route work like iptables,after i > restart the interface, > rules are still there. Your system should have a way of doing this in a callout during the ifup and ifdown scripts. Under Fedora, ifup calls ifup-post, which calls /sbin/ifup-local - you could add your routes there. More importantly, routes are different from iptables. At worst, an iptable rule has a dangling '-i ethX' match that will fail if the interface is down, but that's a harmless because the packet isn't from that interface. On the other hand, what is the kernel supposed to do with a route that points to a down'ed ethX after you've done the ifdown, but before you've done the ifup? It may as well clear routes to the down'ed interface....
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