I had some misconfiguration in squid. Transparent proxy solve my problem. In squid 2.6+ there are no httpd_accel options, I used this manual to solve: http://www.deckle.co.za/squid-users-..._Caching/Proxy
I have another problem, I cannot send HTTPS packets, and squid cannot handle them :| HTTP packets route successfully from A to E, but HTTPSes goes wrong!
Dear Niknah, thanks for your time and sharing your knowledge.