Hi, I'm working on a mobile mesh-networking router and I'd like to be able to modify the hop-count assocated with a given route without having to do a delete followed by add with the new hop-count. Aside from the overhead of the extra system-call the removal/addition of the route could unnecessarily trigger callbacks in other processes monitoring the route table. As far as I can tell this is not currently supported (I'm using kernel 2.6). For instance if I use "ip route add" to add a route and then "ip route change" with a new metric I get the err: "RTNETLINK answers: No such device" Looking through the kernel source code I think that a route is matched by (tos,priority) as well as the prefix so that passing a new priority means that no match is made to the route with the old priority: http://lxr.linux.no/source/net/ipv4/fib_hash.c?v=2.6.10#L479 Am I missing soemthing obvious or is modification of a routes's priority field through netlink not supported and if not should it be? Is there a reason why an existing route should not have tos/priority changed? Any help appreciated, Aidan Doyle -- Aidan Doyle, Sr. Member Technical Staff Sensoria Corp. Email: apdoyle@xxxxxxxxxxxx ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
