From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:59485)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <weidong.huang@huawei.com>) id 1WFcGD-0002xB-M7
	for qemu-devel@nongnu.org; Mon, 17 Feb 2014 23:26:27 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <weidong.huang@huawei.com>) id 1WFcG7-0001jt-HX
	for qemu-devel@nongnu.org; Mon, 17 Feb 2014 23:26:21 -0500
Received: from szxga03-in.huawei.com ([119.145.14.66]:63144)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <weidong.huang@huawei.com>) id 1WFcG6-0001ix-Lo
	for qemu-devel@nongnu.org; Mon, 17 Feb 2014 23:26:15 -0500
Message-ID: <5302E0CF.3030108@huawei.com>
Date: Tue, 18 Feb 2014 12:25:51 +0800
From: Weidong Huang <hwd@huawei.com>
MIME-Version: 1.0
References: <1E56D579D4C54943A5676C395BB1234A6E36B647@nkgeml511-mbx.china.huawei.com>
	<52F9DDCA.2000108@redhat.com> <52FED89F.4030804@huawei.com>
	<5302CA0D.7050003@redhat.com>
In-Reply-To: <5302CA0D.7050003@redhat.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] question about patch "send the gratuitous by guest"
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Jason Wang <jasowang@redhat.com>
Cc: "chenliang (T)" <chenliang88@huawei.com>, "Huangweidong (C)" <weidong.huang@huawei.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

On 2014/2/18 10:48, Jason Wang wrote:

> On 02/15/2014 11:01 AM, Weidong Huang wrote:
>> it
>> configure vlan or alias on the virtio net.
>>
>> But bridge or bond do not send arp. what's your opinion?
> 
> Do you mean bridge or bond in guest?

yes.

>>
>> BTW,this feature need modify the driver of virtio net.
>>
>> Only the newest linux kernel support it. So what's about old guest os?
>>
> 
> It will be hard for the legacy device to know about migration. One
> workaround is:
> 
> - enable arp_notify
> - toggle link status after migration
> 
>> Thanks.
> 
> 
>