things need to change to enable multiple hop routing

#!/bin/ash

# needed for static multihop routing
echo 1 > /proc/sys/net/ipv4/ip_forward
echo 0 > /proc/sys/net/ipv4/conf/all/send_redirects
echo 0 > /proc/sys/net/ipv4/conf/all/accept_redirects
echo 0 > /proc/sys/net/ipv4/conf/ath0/send_redirects
echo 0 > /proc/sys/net/ipv4/conf/ath0/accept_redirects
echo 0 > /proc/sys/net/ipv4/conf/ath1/send_redirects
echo 0 > /proc/sys/net/ipv4/conf/ath1/accept_redirects
echo 0 > /proc/sys/net/ipv4/conf/ath2/send_redirects
echo 0 > /proc/sys/net/ipv4/conf/ath2/accept_redirects

embedded linux tools for android

Busybox
http://www.androidfanatic.com/community-forums.html?func=view&id=228&catid=9

Iperf
http://www.magicandroidapps.com/wiki//index.php?title=Using_iPerf_for_Android

Rooting Galaxy S2
http://samsunggalaxys2review.org/root-your-samsung-galaxy-s2-heres-how/

enable multi-hop routing
http://thindot.blogspot.com/2011/10/things-need-to-change-to-enable.html