scripts/trunk/android-tether.sh

#!/bin/sh -x

# as described at
# http://www.forceclose.com/questions/2669/connect-android-to-internet-using-usb-tether-through-laptops-newtwork

sudo id

android=`adb shell ip addr list usb0 | grep 'inet ' | sed 's/^ *//g'`

a_ip=`echo $android | cut -d" " -f2 | cut -d/ -f1`
c_ip=`echo $a_ip | cut -d. -f-3`.1
netmask=`echo $android | cut -d" " -f4`

echo "Android $a_ip netmask $netmask -> $c_ip"

sudo ifconfig usb0 $c_ip netmask $netmask up
sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
sudo iptables -t nat -A POSTROUTING -s $a_ip -o br0 -j MASQUERADE

adb shell ip route add default via $c_ip
adb shell setprop net.dns1 8.8.8.8

adb shell ping -c 1 $c_ip
ping -c 1 $a_ip
1	#!/bin/sh -x
2
3	# as described at
4	# http://www.forceclose.com/questions/2669/connect-android-to-internet-using-usb-tether-through-laptops-newtwork
5
6	sudo id
7
8	android=`adb shell ip addr list usb0 \| grep 'inet ' \| sed 's/^ *//g'`
9
10	a_ip=`echo $android \| cut -d" " -f2 \| cut -d/ -f1`
11	c_ip=`echo $a_ip \| cut -d. -f-3`.1
12	netmask=`echo $android \| cut -d" " -f4`
13
14	echo "Android $a_ip netmask $netmask -> $c_ip"
15
16	sudo ifconfig usb0 $c_ip netmask $netmask up
17	sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
18	sudo iptables -t nat -A POSTROUTING -s $a_ip -o br0 -j MASQUERADE
19
20	adb shell ip route add default via $c_ip
21	adb shell setprop net.dns1 8.8.8.8
22
23	adb shell ping -c 1 $c_ip
24	ping -c 1 $a_ip