The in-kernel header file include/uapi/linux/netfilter/nfnetlink_queue.h nfqnl_attr_type enum includes two additional types: NFQA_CAP_LEN, /* __u32 length of captured packet */ NFQA_SKB_INFO, /* __u32 skb meta information */ Which are not in the version shipped with libnetfilter_queue. Should these be in sync? Phil -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html