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#!/bin/bash

RETVAL=0

initialize() {
  # Initialize $TYPE tables
  echo -n $"  $TYPE tables: "
  if [ -r /etc/sysconfig/ebtables.$TYPE ]; then
    /sbin/ebtables -t $TYPE --atomic-file /etc/sysconfig/ebtables.$TYPE --atomic-commit > /dev/null || RETVAL=1
  else
    echo -n "not configured"
  fi
  if [ $RETVAL -eq 0 ]; then
    echo -n $"[  OK  ]"
    echo -ne "\r"
  else
    echo -n $"[FAILED]"
    echo -ne "\r"
  fi
}

case $1 in
  start)
   # Initialize	filter tables
   TYPE=filter
   initialize
 
   # Initialize NAT tables
   echo
   TYPE=nat
   initialize

   # Initialize broute tables
   echo
   TYPE=broute
   initialize
  ;;
  stop)
    /sbin/ebtables -t filter --init-table || RETVAL=1
    /sbin/ebtables -t nat --init-table || RETVAL=1
    /sbin/ebtables -t broute --init-table || RETVAL=1

    for mod in $(grep -E '^(ebt|ebtable)_' /proc/modules | cut -f1 -d' ') ebtables; do
       /sbin/rmmod $mod || RETVAL=1
    done

    if [ $RETVAL -eq 0 ]; then
      echo -n $"[  OK  ]"
      echo -ne "\r"
    else
      echo -n $"[FAILED]"
      echo -ne "\r"
    fi
  ;;
  save)
    echo -n $"Saving Ethernet bridge filtering (ebtables): "
    /sbin/ebtables -t filter --atomic-file /etc/sysconfig/ebtables.filter --atomic-save || RETVAL=1
    /sbin/ebtables -t nat --atomic-file /etc/sysconfig/ebtables.nat --atomic-save || RETVAL=1
    /sbin/ebtables -t broute --atomic-file /etc/sysconfig/ebtables.broute --atomic-save || RETVAL=1
    if [ $RETVAL -eq 0 ]; then
      echo -n $"[  OK  ]"
      echo -ne "\r"
    else
      echo -n $"[FAILED]"
      echo -ne "\r"
    fi
  ;;
  *)
    echo "usage: ${0##*/} {start|stop|save}" >&2
    exit 1
  ;;
esac

# vim:set ts=2 sw=2 ft=sh et: