#!/bin/bash family=bridge for hook in prerouting input forward postrouting do prioname=out $NFT add table $family x $NFT add chain $family x y "{ type filter hook $hook priority $prioname; }" &> /dev/null if (($? == 0)) then echo "E: $prioname should not be a valid priority name for bridge $hook chains." >&2 exit 1 fi done exit 0