root@OpenWrt:/# ipkg install iptables-mod-extra
Installing iptables-mod-extra (1.3.5-1) to root...
Downloading http://downloads.x-wrt.org/xwrt/kamikaze/x86-2.6/packages/./iptables-mod-extra_1.3.5-1_i386.ipk
Installing kmod-ipt-extra (2.6.19.2-x86-1) to root...
Downloading http://downloads.x-wrt.org/xwrt/kamikaze/x86-2.6/packages/./kmod-ipt-extra_2.6.19.2-x86-1_i386.ipk
Configuring iptables-mod-extra
Configuring kmod-ipt-extra
Done.
root@OpenWrt:/# iptables -A INPUT -s 192.168.1.1 -j LOG --log-prefix "foobar: "
root@OpenWrt:/#