From: Andi Kleen <ak@suse.de>
To: "John Que" <qwejohn@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: determine outgoing interface (eth0,eth1) for a packet according to the dest IP
Date: Tue, 25 Apr 2006 16:48:09 +0200 [thread overview]
Message-ID: <200604251648.10113.ak@suse.de> (raw)
In-Reply-To: <ada605fb0604250744w73c7766as1d3ceb0d62511764@mail.gmail.com>
On Tuesday 25 April 2006 16:44, John Que wrote:
> Thanks a lot !
>
> I had tried the sending RTM_GETROUTE message using a NETLINK_ROUTE
> socket in a User Space program and it went OK.
>
> It gaves correct routing struct which I could parse.
> In fact it gave the rotuing table.
> But in sending that message I did not specify a certain
> dest IP.
> Consider the follwing simple scenario: I have 2 gateways
> (one on eth0,one on eth1), and I am sending
> a packet to some dest IP ; I want to know according to
> that ip on which interface (or gw) it will be out
>
> But where do I specify that certain dest IP ?
You add RTA_SRC and RTA_DST attributes to the query.
-Andi
next prev parent reply other threads:[~2006-04-25 14:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-25 7:31 determine outgoing interface (eth0,eth1) for a packet according to the dest IP John Que
2006-04-25 7:43 ` Andi Kleen
2006-04-25 7:58 ` David S. Miller
2006-04-25 14:44 ` John Que
2006-04-25 14:48 ` Andi Kleen [this message]
2006-04-26 10:24 ` John Que
2006-04-26 13:58 ` Herbert Xu
2006-04-30 9:17 ` Lennert Buytenhek
2006-04-30 12:55 ` Herbert Xu
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