2009/7/14 Amos Jeffries <squid3@xxxxxxxxxxxxx>: > Aha! duplicate syn-ack is exactly the case I got a good trace of earlier. > Turned out to be missing config on the cisco box. Do you have an example of this particular (mis) configuration? The note in the Wiki article isn't very clear. > The Features/Tproxy4 wiki page now makes explicit mention of this and > several possible workarounds. > The problem seems to be that the WCCP automatic bypass for return traffic > uses IP, which is not usable under TPROXY. Some other method of traffic > detection and bypass must be explicitly added for traffic > Squid->Cisco->Internet. In the old tproxy v2 configs (which still apply) > the class 90 was used for this. .. uhm, again, that isn't very clear. "automatic bypass" isn't explicitly configured anywhere nor do I see anything in the tproxy2 config which mentions bypass with class 90. So I'm very curious what exactly it is that people are seeing, with what exact configuration(s). Adrian