initscripts/sbin/ifdown

#!/bin/bash
# Copyright (c) 2003-2012 by Silvan Calarco <silvan.calarco@mambasoft.it>
# Copyright (c) 2003-2009,2013 by Davide Madrisan <davide.madrisan@gmail.com>

. /etc/sysconfig/rc
. $rc_functions

DEVICE=${1}

if [ -z "$DEVICE" ]; then
   echo "Usage: ifdown <device name>" 1>&2
   exit 1
fi

[ "$NM_CONTROLLED" = "0" ] || exit 0

[ -r $network_devices/ifcfg-${DEVICE} ] &&
   . $network_devices/ifcfg-${DEVICE}

if [ -x $network_devices/ifdown-${DEVICE} ]; then
   $network_devices/ifdown-${DEVICE}
else
   if [ -r /var/run/wpa_supplicant/${DEVICE} ]; then
      wpa_cli -i${DEVICE} terminate >/dev/null
   fi

   if [ -r /var/run/dhclient.${DEVICE}.pid ]; then
      /sbin/dhclient ${DEVICE} -r -pf /var/run/dhclient.${DEVICE}.pid
      kill -9 `cat /var/run/dhclient.${DEVICE}.pid` 2>/dev/null
      rm -f /var/run/dhclient.${DEVICE}.pid
   fi

   /sbin/ifconfig ${DEVICE} down
fi