Default [Q] Is iptables working on 4.4.2 stock ?

Hi,

My Galaxy S4 i9505 is on Android 4.3 stock rooted.

I would like to know if iptables is working before updating to android 4.4.2 stock.
Can someone do this test on his Galaxy on 4.4.2 stock rooted ?

Install Android Terminal Emulator and enable access point in network settings
In terminal :
HTML Code:
su
iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.168.43.1:8980
This is risk-free, reboot your phone and iptables rules are deleted

And tell me if there is an error message like "getprotobyname is not implemented on Android" (if nothing is displayed it's ok)

Thanks !