netdev - lookup in fib tables with NETLINK_FIB

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Date:	Mon, 25 May 2009 13:44:19 +0300
From:	David Shwatrz <dshwatrz@...il.com>
To:	netdev@...r.kernel.org
Cc:	robert@...ur.slu.se
Subject: lookup in fib tables with NETLINK_FIB_LOOKUP

Hello,
I would appreciate if someone can write a short and brief explanation about
the usage of  NETLINK_FIB_LOOKUP. It enables to perform a fib_lookup()
via netlink.
What's is its usage ? Are there any user space tools which use it ?
I grepped for "NETLINK_FIB_LOOKUP" under iproute2 source code and no hit.
Is there any difference between performing a lookup in the routing
tables (as "ip route ...")
and performing a lookup with NETLINK_FIB_LOOKUP?

The NETLINK_FIB_LOOKUP was added a time ago, by Robert Olsson in  2005.

see for example:http://www.mail-archive.com/netdev@vger.kernel.org/msg36395.html

(git commit 246955fe4c38bd706ae30e37c64892c94213775d)

Regards,
DS
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