#!/bin/bash

set -e

MAX_JUMPS=16

$NFT add table t

$NFT add chain t c1 { type filter hook input priority 0\; }

for i in $(seq 2 $MAX_JUMPS)

do

	$NFT add chain t c${i}

done

for i in $(seq 1 $((MAX_JUMPS - 1)))

do

	$NFT add rule t c${i} jump c$((i + 1))

done

# this last jump should fail: too many links

$NFT add chain t c$((MAX_JUMPS + 1))

$NFT add rule t c${MAX_JUMPS} jump c$((MAX_JUMPS + 1)) 2>/dev/null || exit 0

echo "E: max jumps ignored?" >&2

exit 1