#!/bin/sh
# Usage: iptables-flush [-6]

iptables=/usr/sbin/iptables
tables="filter mangle raw"

if [ "$1" = "-6" ]; then
  iptables=/usr/sbin/ip6tables
else
  # Only ipv4 has a nat table
  tables="$tables nat"
fi

for table in ${tables}; do
  $iptables -t "$table" -F
  $iptables -t "$table" -X
done

for chain in INPUT FORWARD OUTPUT; do
  $iptables -P "$chain" ACCEPT
done