su - root
sysctl -w net.ipv4.ip_forward=1


iptables -t nat -F PREROUTING
iptables -t nat -F OUTPUT


iptables -t nat -A PREROUTING -p tcp --dport 8090 -j DNAT --to-destination :9090


iptables -t nat -A OUTPUT -p tcp -d localhost --dport 8090 -j DNAT --to-destination 127.0.0.1:9090


iptables -t nat -A POSTROUTING -p tcp --dport 9090 -j MASQUERADE


iptables -A FORWARD -p tcp --dport 9090 -j ACCEPT
iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT

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