Hi guys,
I've got another issue. I made a test IP in IP tunnel like in this article https://sites.google.com/site/mrxpalmeiras/linux/create-ipip-tunnel-between-networks
Then on machine A:
iptables -t nat -A PREROUTING -d 101.131.77.67 -p tcp -m tcp --dport 80 -j DNAT --to-destination...