Run the commands:

insmod /lib/modules/2.6.21-omap1/net/netfilter/nf_conntrack.ko
insmod /lib/modules/2.6.21-omap1/net/ipv4/netfilter/nf_conntrack_ipv4.ko
insmod /lib/modules/2.6.21-omap1/net/ipv4/netfilter/nf_nat.ko
insmod /lib/modules/2.6.21-omap1/net/ipv4/netfilter/iptable_nat.ko
insmod /lib/modules/2.6.21-omap1/net/ipv4/netfilter/iptable_raw.ko
insmod /lib/modules/2.6.21-omap1/net/ipv4/netfilter/ipt_REDIRECT.ko
insmod /lib/modules/2.6.21-omap1/net/ipv4/netfilter/ipt_SAME.ko
insmod /lib/modules/2.6.21-omap1/net/ipv4/netfilter/ipt_MASQUERADE.ko
insmod /lib/modules/2.6.21-omap1/net/ipv4/netfilter/ipt_NETMAP.ko



Please note that this enables NAT, but I never tried any of kismet, ettercap or dsniff, so I don't know if that is enough to make them work.