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Date: Thu, 7 Mar 2013 18:14:28 +0100
From: Samuel Thibault <samuel.thibault@labri.fr>
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Subject: Re: [Qemu-devel] [PER] Re:  socket,
 mcast looping back frames -> IPv6 broken
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To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: ped@listes.subiron.org, qemu-devel@nongnu.org

Stefan Hajnoczi, le Thu 07 Mar 2013 10:38:26 +0100, a écrit :
> On Wed, Mar 06, 2013 at 02:15:25PM +0100, Samuel Thibault wrote:
> > Stefan Hajnoczi, le Wed 06 Mar 2013 13:29:37 +0100, a écrit :
> > > On Tue, Mar 05, 2013 at 05:35:10PM +0100, Samuel Thibault wrote:
> > > Unfortunately net/socket.c does not have the concept of a link-layer
> > > address, so we cannot easily filter out multicast packets coming from
> > > our NIC's address.
> > > 
> > > Are you aware of a way to filter out just the packets sent by *this*
> > > process?
> > 
> > I haven't seen any in the Linux source code.  One thing that should
> > work, however, is to use recvfrom, and drop whatever comes from our
> > sockname.
> 
> Sounds like a plan :).

Except that the sockname is the multicast address itself...  I'll have a
closer look.

Samuel