#!/bin/bash
HOWMANY=255
tmpfile=$(mktemp)
if [ ! -w $tmpfile ] ; then
echo "Failed to create tmp file" >&2
exit 0
fi
trap "rm -rf $tmpfile" EXIT # cleanup if aborted
generate() {
echo -n "{"
for ((i=1; i<=HOWMANY; i++)) ; do
for ((j=1; j<=HOWMANY; j++)) ; do
echo -n "10.${i}.${j}.0/24"
[ "$i" == "$HOWMANY" ] && [ "$j" == "$HOWMANY" ] && break
echo -n ", "
done
done
echo -n "}"
}
echo "add table x
add set x y { type ipv4_addr; flags interval; }
add element x y $(generate)" > $tmpfile
set -e
$NFT -f $tmpfile