There is a line missing in include/uapi/linux/netfilter/Kbuild: header-y += xt_SYNPROXY.h Without this line, the file xt_SYNPROXY.h does not get installed in /usr/include/linux/netfilter/, and thus user-space programs cannot make use of it. Please correct this oversight at your convenience. Thank you. -- 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