Hi all, I am using the libipq library to do userspace programming on netfilter. I am having some problems understanding the return values of the function ipq_set_verdict(): When I set verdict (either NF_ACCEPT or NF_DROP) without modifying the packet, the return value of ipq_set_verdict is 28 and everything works well; however, when I set verdict trying to modify the packet, ipq_set_verdict returns 88, and the packet seems always to be dropped even when I set NF_ACCEPT. Does anybody know what these return values mean? Moreover, could anybody tell me how I can successfully modify a packet using libipq? Thank you very much in advance!! Regards, Jee