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Date: Mon, 20 Jul 2009 21:20:32 +0300
From: "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] net: add raw backend  - some performance
	measurements
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To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Mark McLoughlin <markmc@redhat.com>, Dor Laor <dlaor@redhat.com>, qemu-devel@nongnu.org, Or Gerlitz <ogerlitz@voltaire.com>, Jan Kiszka <jan.kiszka@web.de>

On Mon, Jul 20, 2009 at 11:53:08PM +0800, Herbert Xu wrote:
> On Mon, Jul 20, 2009 at 05:13:06PM +0300, Or Gerlitz wrote:
> >
> > with -net tap (tap + bridge)
> 
> Is netfilter enabled on the bridge? If so you need to turn it off
> because it's a huge security hole for virtualisation

How is it a security hole?

> and slows it
> down heaps.
> 
> Cheers,