#!/bin/bash

set -e

format_offset () {

	i=$1

	if ((i == 0))

	then

		echo ""

	elif ((i > 0))

	then

		echo "+$i"

	else

		echo "$i"

	fi

}

$NFT add table t

for offset in -11 -10 0 10 11

do

	$NFT add flowtable t f "{ hook ingress priority filter `format_offset $offset`; devices = { lo }; }"

	$NFT delete flowtable t f

done