From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44720) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WFak2-00075T-Ob for qemu-devel@nongnu.org; Mon, 17 Feb 2014 21:49:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WFajw-0006fd-Po for qemu-devel@nongnu.org; Mon, 17 Feb 2014 21:49:02 -0500 Received: from mx1.redhat.com ([209.132.183.28]:25925) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WFajw-0006fS-HP for qemu-devel@nongnu.org; Mon, 17 Feb 2014 21:48:56 -0500 Message-ID: <5302CA0D.7050003@redhat.com> Date: Tue, 18 Feb 2014 10:48:45 +0800 From: Jason Wang MIME-Version: 1.0 References: <1E56D579D4C54943A5676C395BB1234A6E36B647@nkgeml511-mbx.china.huawei.com> <52F9DDCA.2000108@redhat.com> <52FED89F.4030804@huawei.com> In-Reply-To: <52FED89F.4030804@huawei.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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Weidong Huang Cc: "chenliang (T)" , "Huangweidong (C)" , "qemu-devel@nongnu.org" 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? > > 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.