It's me again, just for track the analisys. Well SYNACK packet is not generated because an incorrect cksum in the SYN request. Now I digg backwards to identify in which network apparate the corruption take place. -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html