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iptables-translate -t mangle -A PREROUTING -m rpfilter
nft add rule ip mangle PREROUTING fib saddr . iif oif != 0 counter
iptables-translate -t mangle -A PREROUTING -m rpfilter --validmark --loose
nft add rule ip mangle PREROUTING fib saddr . mark oif != 0 counter
ip6tables-translate -t mangle -A PREROUTING -m rpfilter --validmark --invert
nft add rule ip6 mangle PREROUTING fib saddr . mark . iif oif 0 counter
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