#!/bin/bash

set -e

RULESET="add table x

add set x y { type ipv4_addr; flags interval;}

add element x y { 192.168.0.0/24, 192.168.2.0/24 }

delete element x y { 192.168.0.0/24 }

delete element x y { 192.168.2.0/24 }

add element x y { 192.168.4.0/24 }"

$NFT -f - <<< "$RULESET"

if [ $? -ne 0 ] ; then

        echo "E: unable to load good ruleset" >&2

        exit 1

fi