How can I enable ip_forward in Android?

I'm testing arp spoofing on phone but it's not working. ARP is changed on my PC but after it i can't ping any website.

I did this on phone:

echo "1" > /proc/sys/net/ipv4/ip_forward

And after cat all seems good but after arp spoofing i can't connect to the internet from PC.

I did this same on PC and on PC is working but I want to do this on phone.

How can I achieve this?

Software on phone:

Android 4.4.4

Kernel: 3.4.67

Xperia E4.

1 Answer

I had fixed it!

I'm using these three commands and now it's working.

echo "1" > /proc/sys/net/ipv4/ip_forward
iptables -F -t filter
iptables -P FORWARD ACCEPT

And now it's working :)