netdev - Re: Multicast and receive filtering in TUN/TAP

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Message-Id: <200807102223.40717.borntraeger@de.ibm.com>
Date:	Thu, 10 Jul 2008 22:23:40 +0200
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	Max Krasnyansky <maxk@...lcomm.com>
Cc:	virtualization@...ts.linux-foundation.org,
	Brian Braunstein <linuxkernel@...style.com>,
	Shaun Jackman <sjackman@...il.com>, netdev@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: Multicast and receive filtering in TUN/TAP

Am Donnerstag, 10. Juli 2008 schrieb Max Krasnyansky:
> > Thing is, we are heading towards virtio. 
> Even for Windows ?

Its possible:
http://marc.info/?l=kvm&m=121075389300722&w=2

> 
> > Unfortunately, virtio_net currently  does not offer a method to register 
multicast addresses.
> 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.

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