title: IP forward with Android 4.0 don't work
body: <p>Il test a man in the middle attack (mitm) in wireless with a smartphone (HTC One X) and 2 computers. With the smartphone, the arp cache poisoning has correctly corrupted my 2 computers. </p>
  
  <p>For the forwarding I have juste put "1" in /proc/sys/net/ipv4/ip_forward. But ip forward don't work.</p>
  
  <p>Shark sniffed in my smartphone, I sent packets with a computer, they are well arrived at my smartphone but they are not redirected to my other computeur.</p>
  
  <p>Is there any others solutions for ip forwarding with android 4.0 ?</p>