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#!/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
echo "E: max jumps ignored?" >&2