#!/bin/bash set -e RULESET="table inet filter { flowtable ftable { hook ingress priority 0; devices = { eno1, eno0, x }; } chain forward { type filter hook forward priority 0; policy drop; ip protocol { tcp, udp } ct mark and 1 == 1 counter flow add @ftable ip6 nexthdr { tcp, udp } ct mark and 2 == 2 counter flow add @ftable ct mark and 30 == 30 ct state established,related log prefix \"nftables accept: \" level info accept } }" $NFT -f - <<< "$RULESET" >/dev/null || exit 0