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modprobe iptable_nat
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE #Forward on this interface 
iptables -A FORWARD -i wlan0 -j ACCEPT #Tells to accept all connections coming on wlan0 

# Works completely fine - Need to test it on OpenVPN 
# Here the interface which has internet is eth0 
# Need to understand POSTROUTING nad MASQUERADE