GRE Tunnel script

#! /bin/sh

# Configurable options:
echo > 1 /proc/sys/net/ipv4/ip_forward
/sbin/modprobe ip_nat_ftp
/sbin/modprobe ip_conntrack_ftp
#insmod /lib/modules/2.6.18-4-686/kernel/net/ipv4/ipip.ko
#insmod /lib/modules/2.6.18-4-686/kernel/net/ipv4/ip_gre.ko

start ()
{
 ip tunnel add netFB mode gre remote 89.X.X.X local 89.X.X.X ttl 255
 ip link set netFB up
 ip addr add 192.168.1.4 dev netFB
 ip route add 192.168.2.0/24 dev netFB
}