Author: Cdric de Launois <delaunois@info.ucl.ac.be>
Status: In Development/Works for me
  
  This option adds a `ROUTE' target, which enables you to setup unusual
  routes not supported by the standard kernel routing table.
  For example, the ROUTE lets you directly route a received packet through 
  an interface or towards a host, even if the regular destination of the 
  packet is the router itself. The ROUTE target is also able to change the 
  incoming interface of a packet.

  This target does never modify the packet and is a final target.
  It has to be used inside the mangle table.

  ROUTE target options:
    --oif   ifname    Send the packet out using `ifname' network interface.
    --iif   ifname    Change the packet's incoming interface to `ifname'.
    --gw    ip        Route the packet via this gateway.

  Examples :

  To redirect all outgoing icmp packet to the eth1 interface :
  # iptables -A POSTROUTING -t mangle -p icmp -j ROUTE --oif eth1

  To tunnel all incoming http packets :
  # iptables -A PREROUTING -t mangle -p tcp --dport 80 -j ROUTE --oif tunl1

  To force the next-hop used for ssh packets :
  # iptables -A PREROUTING -t mangle -p tcp --dport 22 -j ROUTE --gw w.x.y.z

  To change the incoming network interface from eth0 to eth1 for icmp packets :
  # iptables -A PREROUTING -t mangle -p icmp -i eth0 -j ROUTE --iif eth1
 
