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Date: Tue, 30 Jun 2015 15:21:47 +0800
From: Fam Zheng <famz@redhat.com>
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Subject: Re: [Qemu-devel] [Bug 1469946] Re: guest can't get IP when create
 guest with bridge.
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To: Bug 1469946 <1469946@bugs.launchpad.net>
Cc: qemu-devel@nongnu.org

On Tue, 06/30 03:41, chao zhou wrote:
> the first bad commit is
> commit a90a7425cf592a3afeff3eaf32f543b83050ee5c
> Author: Fam Zheng <famz@redhat.com>
> Date:   Thu Jun 4 14:45:17 2015 +0800
> 
>     tap: Drop tap_can_send
>     
>     This callback is called by main loop before polling s->fd, if it returns
>     false, the fd will not be polled in this iteration.
>     
>     This is redundant with checks inside read callback. After this patch,
>     the data will be sent to peer when it arrives. If the device can't
>     receive, it will be queued to incoming_queue, and when the device status
>     changes, this queue will be flushed.
>     
>     Signed-off-by: Fam Zheng <famz@redhat.com>
>     Message-id: 1433400324-7358-7-git-send-email-famz@redhat.com
>     Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Could you try this patch?

http://lists.nongnu.org/archive/html/qemu-devel/2015-06/msg07377.html

Fam