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Re: Route messages



Paul wrote:
Get these with GRE tunnel on
FreeBSD 7.0-STABLE FreeBSD 7.0-STABLE #5: Sun May 11 19:00:57 EDT 2008 :/usr/obj/usr/src/sys/ROUTER amd64
But do not get them with 7.0-RELEASE

Any ideas what changed? :)  Wish there was some sort of changelog..
# of messages per second seems consistent with packets per second on GRE interface.. No impact in routing, but definitely impact in cpu usage for all processes monitoring the route messages.

RTM_MISS is actually fairly common when you don't have a default route.

Messages which get enqueued don't necessarily get delivered -- and very few processes actually listen to the routing socket actively like this, so I wouldn't worry about it.

If it's a real concern for you then you could try hacking in a sysctl to tell the radix trie code not to issue RTM_MISS messages on the routing socket.

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