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#!/bin/bash
set -e
tmpfile=$(mktemp)
if [ ! -w $tmpfile ] ; then
echo "Failed to create tmp file" >&2
exit 0
fi
trap "rm -rf $tmpfile" EXIT # cleanup if aborted
RULESET="add table x
add set x y { type ipv4_addr; flags interval;}
add element x y { 192.168.0.0/24, 192.168.2.0/24 }
delete element x y { 192.168.0.0/24 }
delete element x y { 192.168.2.0/24 }
add element x y { 192.168.4.0/24 }"
echo "$RULESET" > $tmpfile
$NFT -f $tmpfile
if [ $? -ne 0 ] ; then
echo "E: unable to load good ruleset" >&2
exit 1
fi
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