insmod ipip

ifconfig tunl0 128.198.192.202 netmask 255.255.255.255 broadcast 128.198.192.202 up
route add -host 128.198.192.202 dev tunl0

echo 1>/proc/sys/net/ipv4/ip_forward
echo 1>/proc/sys/net/ipv4/conf/all/hidden
echo 1>/proc/sys/net/ipv4/conf/tunl0/hidden