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Iptables -gw parameter

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linux-howto

http://serverfault.com – I want to copy tcp traffic. i want to use these commands " iptables -A PREROUTING -t mangle -p tcp --dport 7 -j ROUTE --gw 1.2.3.4 --tee iptables -A POSTROUTING -t mangle -p tcp --sport 7 -j ROUTE --gw 1.2.3.4 --tee" like stated here http://stackoverflow.com/questions/7247668/duplicate-tcp-traffic-with-a-... but iptables keeps telling me "iptables v1.4.8: unknown option '--gw'" What can I do to fix this? With Kind Regards (HowTos)