Dear Mailing list, I'm trying to install "ip6tables-1.2.10" in my Fedora linux-2.6.5-1.358 computer. However, when I do "make KERNEL_DIR=/usr/src/linux-2.6.5-1.358", the following error happens: [root@mobilenode1 iptables-1.2.10]# make KERNEL_DIR=/usr/src/linux-2.6.5-1.358 Extensions found: IPv4:recent IPv6:ah IPv6:esp IPv6:frag IPv6:ipv6header IPv6:hbh IPv6:dst IPv6:rt cc -O2 -Wall -Wunused -I/usr/src/linux-2.6.5-1.358/include -Iinclude/ -DIPTABLES_VERSION=\"1.2.10\" -fPIC -o extensions/libipt_ah_sh.o -c extensions/libipt_ah.c In file included from /usr/src/linux-2.6.5-1.358/include/linux/netfilter_ipv4.h:8, from /usr/src/linux-2.6.5-1.358/include/linux/netfilter_ipv4/ip_tables.h:25, from include/libiptc/libiptc.h:6, from include/iptables.h:5, from extensions/libipt_ah.c:8: /usr/src/linux-2.6.5-1.358/include/linux/config.h:6:2: #error including kernel header in userspace; use the glibc headers instead! make: *** [extensions/libipt_ah_sh.o] Error 1 Is there anyway to solve this problem? Thanks a lot your reply! Ying Ge Communications Research Centre Canada | Centre de recherches sur les communications Canada 3701 Carling Ave. | 3701, avenue Carling PO Box 11490, Station H | CP 11490, succursale H Ottawa ON K2H 8S2 | Ottawa (Ontario) K2H 8S2 (613) 998-2819 | ying.ge@xxxxxx | Web site / Site web : www.crc.ca Government of Canada | Gouvernement du Canada