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Date:	Fri, 11 Jul 2008 17:01:38 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Max Krasnyansky <maxk@...lcomm.com>
Cc:	Christian Borntraeger <borntraeger@...ibm.com>,
	virtualization@...ts.linux-foundation.org,
	Brian Braunstein <linuxkernel@...style.com>,
	Shaun Jackman <sjackman@...il.com>, netdev@...r.kernel.org
Subject: Re: Multicast and receive filtering in TUN/TAP

On Friday 11 July 2008 12:20:07 Max Krasnyansky wrote:
> >> I haven't looked at the virtio stuff much, I was assuming that the host
> >> side of it is still the TUN driver. Is it not ?
> >
> > Yes, the host side is still tun/tap. The problem is that qemu doesnt know
> > which multicast addresses are used inside the guest.
>
> Ah, now I see what you meant by virtio_net does not do multicast. I guess
> it should trivial to add. Rusty will clarify it I guess.

Yes, it could certainly be added; that's what feature bits are for :)

Cheers,
Rusty.
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