Hello Grant, My interested 4 bytes can have value between all 0's to all FF's... that's the reason that without matching it for a specific value, I want to record those values.. without using any capturing programs like tcpdump/wireshark.. u32 provided me flexibility to look for only specific bytes...but the action which I would like perform is not currently supported .... I have another story after recording these values :-) Thanks Padmanabhan -- 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