On Wed, 19 Dec 2007, Eric Dumazet wrote: > James Nichols a écrit : > > On 12/19/07, Eric Dumazet <[email protected]> wrote: > > > James Nichols a écrit : > > > > > So you see outgoing SYN packets, but no SYN replies coming from the > > > > > remote > > > > > peer ? (you mention ACKS, but the first packet received from the > > > > > remote > > > > > peer should be a SYN+ACK), > > > > Right, I meant to say SYN+ACK. I don't see them coming back. > > > So... Really unlikely a linux problem, but ... > > > > > > > > > I don't know how you can be so sure. Turning tcp_sack off instantly > > resovles the problem and all connections are succesful. I can't > > imagine even the most far-fetched scenario where a router or every > > single remote endpoints would suddenly stop causing the problem just > > by removing a single TCP option. You could also check if you can pull same trick off by touching tcp_timestamps. It affects the TCP header as well. -- i.
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