iptables -N LOG_DROP
iptables -I FORWARD -s 10.0.0.0/16 -d 10.0.0.0/16 -j LOG_DROP
iptables -A LOG_DROP -j LOG --log-prefix "refused connection: "
iptables -A LOG_DROP -j DROP
iptables -A FORWARD -i enp5s0f0 -o enp9s0f0 -j ACCEPT
iptables -A FORWARD -i enp5s0f0 -o enp9s0f0 -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -t nat -A POSTROUTING -o enp9s0f0 -j MASQUERADE
#iptables -A FORWARD -j DROP