From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44464) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z4q4G-0006kD-5m for qemu-devel@nongnu.org; Tue, 16 Jun 2015 08:34:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z4q4C-0005cg-W0 for qemu-devel@nongnu.org; Tue, 16 Jun 2015 08:34:16 -0400 Received: from mx-v6.kamp.de ([2a02:248:0:51::16]:33410 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z4q4C-0005c3-Kr for qemu-devel@nongnu.org; Tue, 16 Jun 2015 08:34:12 -0400 Message-ID: <558017B6.3010206@kamp.de> Date: Tue, 16 Jun 2015 14:33:58 +0200 From: Peter Lieven MIME-Version: 1.0 References: <55672104.2040800@kamp.de> <1432823072.1732.33.camel@oscar> <55754E5D.4090205@kamp.de> <0F7ECCC9-62AA-4939-A1A1-3F46E6558278@redhat.com> In-Reply-To: <0F7ECCC9-62AA-4939-A1A1-3F46E6558278@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Subject: Re: [Qemu-devel] Windows2012R2 virtio-win drivers and IPv6 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Yan Vugenfirer Cc: Gleb Natapov , Tobias Schmidt , Vadim Rozenfeld , Lukas Friedrichs , "qemu-devel@nongnu.org" Hi Yan, thanks for the reply. > > * When you experience the issues is it between VMs on the same host? I can reproduce it between a Windows VM on Host A and a Linux VM on Host B. Linux and Windows are not on the same host systems due to licensing. Between Linux VMs and/or if I download to the Windows VM there is no issue. Only outbound TCP traffic from the Windows vServer is affected and it only affects IPv6 traffic. > > * Can you describe your host network configuration? Windows VM on Qemu -> tap -> Linux Bridge -> eth (tagged) -> Network -> eth(tagged) -> Linux Bridge -> tap -> Linux VM on Qemu. > > * Can provide the output for "ethtool -k” for every NIC (including tap devices) in the host that is involved with the VM that has a problem? Offload parameters for tap4: rx-checksumming: off tx-checksumming: on scatter-gather: on tcp-segmentation-offload: off udp-fragmentation-offload: off generic-segmentation-offload: on generic-receive-offload: on large-receive-offload: off rx-vlan-offload: off tx-vlan-offload: on ntuple-filters: off receive-hashing: off Offload parameters for br136: rx-checksumming: off tx-checksumming: on scatter-gather: on tcp-segmentation-offload: off udp-fragmentation-offload: off generic-segmentation-offload: on generic-receive-offload: on large-receive-offload: off rx-vlan-offload: off tx-vlan-offload: on ntuple-filters: off receive-hashing: off Offload parameters for eth2: rx-checksumming: on tx-checksumming: on scatter-gather: on tcp-segmentation-offload: on udp-fragmentation-offload: off generic-segmentation-offload: on generic-receive-offload: off large-receive-offload: off rx-vlan-offload: on tx-vlan-offload: on ntuple-filters: off receive-hashing: off > > * What are the host kernel version, QEMU version and guest driver version you are using? host: 3.13.0-53-generic qemu: 2.2.1 guest dirver: 0.1.100 Thank You, Peter