Hello List, I'm new to the iptables. I just downloaded iptables-1.2.9.tar.bz2, compiled and installed it with following: (I tried to delete the old iptable version with following command before install the 1.2.9 version, but failed: # rpm -q iptables iptables-1.2.8-13 # rpm -e iptables error: Failed dependencies: iptables >=1.2.8 is needed by (installed) readhat-config-securitylevel-tui-1.2.11-1) # make KERNEL_DIR=/usr/src/linux-2.4.22-1.2115.npl # make install KERNEL_DIR=/usr/src/linux-2.4.22-1.2115.npl # make install-devel # modprobe ip6_tables No error message appears. However, when I use the ip6tables: # ip6tables -L I got the following error message: "can't initialize ip6tables table 'filter': Address family not supported by protocol Perhaps iptables or your kernel needs to be upgrades" The following is my system information: Platform: Fedora Kernel version: linux-2.4.22.2115.npl Would you please tell me what happened? Best regards Ying 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@crc.ca | Web site / Site web : www.crc.ca Government of Canada | Gouvernement du Canada