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#!/bin/bash
set -e
tmpfile1=$(mktemp)
tmpfile2=$(mktemp)
clean_tmpfile()
{
rm -f "$tmpfile1" "$tmpfile2"
}
trap clean_tmpfile EXIT
cat > $tmpfile1<<EOF
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
-N FOO
-A FOO -j DROP
EOF
$XT_MULTI iptables -N FOO
$XT_MULTI iptables -A FOO -j DROP
$XT_MULTI iptables -S > $tmpfile2
diff -u $tmpfile1 $tmpfile2
rm -f $tmpfile1 $tmpfile2
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