From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Liljeberg Subject: Re: ipv6 stack seems to forget to send ACKs Date: 10 Jan 2003 00:12:33 +0200 Sender: netdev-bounce@oss.sgi.com Message-ID: <1042150352.4688.15.camel@devil> References: <20030108150201.GA30490@wiggy.net> <20030108170139.GL22951@wiggy.net> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, Maciej Soltysiak , netdev@oss.sgi.com Return-path: To: Wichert Akkerman In-Reply-To: <20030108170139.GL22951@wiggy.net> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Hi Wichert, Looking at your trace it seems that the receiving machine is dropping all packets that do not have traffic class set. Note that all segments received with [class 0x2] get properly acked. The others probably don't get to TCP at all. You might want to check your filters and QoS policies. BR, MikaL On Wed, 2003-01-08 at 19:01, Wichert Akkerman wrote: > Previously Maciej Soltysiak wrote: > > I seem to be getting better results than you, i think that it is not an > > issue of ipv6 implementation but simply the case of time sensitive > > traffic fighting with other Internet traffic over tunnels through ipv4 > > networks. > > Actually, I don't follow this. How could any kind of traffic shaping > result in my client not sending ACKs, which is what the tcpdump > seems to indicate? I can understand packets being dropped which > would result in retransmits, but that is not the case here. > > Wichert. > > (usual I'm-no-network-guru-and-might-be-misreading-things disclaimer here)