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From: Chris Wright <chrisw@osdl.org>
To: FoObArf00@netscape.net
Cc: Chris Wright <chrisw@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: IGMP packets?
Date: Wed, 8 Dec 2004 13:33:59 -0800	[thread overview]
Message-ID: <20041208133359.Z2357@build.pdx.osdl.net> (raw)
In-Reply-To: <00640596.1F2101FF.023DF18B@netscape.net>; from FoObArf00@netscape.net on Wed, Dec 08, 2004 at 03:58:29PM -0500

* FoObArf00@netscape.net (FoObArf00@netscape.net) wrote:
> I have 3 machines.  A (eth0) is connected to B (eth1) with a cross over
> cable and B (eth0) and C (eth0) are on a switch.  I want to forward the
> igmp queries and reports that A (eth1) generates when joining/leaving a
> multicast group on B (eth1) from B(eth0) to C (eth0).  I put the code to
> do this on different places such as ip_rcv, ip_route_input, etc and no
> luck.  The weird thing is that it works when I do a tcpdump on B's eth1.

Sounds like B(eth1) is filtering the packets.  Does it also work if you
enable IFF_ALLMULTI on eth1 (instead of IFF_PROMISC)?  Also, what kernel
are you using?  Does a group join on A generate a v1 or v3 report?

thanks,
-chris

  reply	other threads:[~2004-12-08 21:34 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-08 20:58 IGMP packets? FoObArf00
2004-12-08 21:33 ` Chris Wright [this message]
  -- strict thread matches above, loose matches on Subject: below --
2004-12-07  0:29 FoObArf00
2004-12-08 18:05 ` Chris Wright

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