simple_network_Interface stop

#----Line #10 of http://www.pearltrees.com/s243a/simple-network-setup-usr-local/id14851906
#100325 added 'stop' commandline option. added DHCPCDFIX for wired.
#----Lines #42 to #59 of http://www.pearltrees.com/s243a/simple-network-setup-usr-local/id14851906
if [ $1 ];then #100325
 case $1 in
  stop)
   if [ -f /tmp/sns_interface_success ];then
    INTERFACE="`cat /tmp/sns_interface_success`"
    rm -f /tmp/sns_interface_success
    [ "`pidof wpa_supplicant`" != "" ] && wpa_cli terminate #kill wpa_supplicant.
    ifconfig $INTERFACE down
    [ "`iwconfig $INTERFACE | grep "$INTERFACE" | grep "ESSID"`" != "" ] && iwconfig $INTERFACE essid off
    dhcpcd --release $INTERFACE 2>/dev/null
    ip route flush dev $INTERFACE #100703
    #in situation bring down interface from desktop icon...
    [ "$DISPLAY" ] && LANG=$LANGORIG yaf-splash -placement bottom -bg pink -timeout 5 -text "$(gettext 'Network interface') ${INTERFACE} $(gettext 'has been disabled')" &
   fi
   exit
  ;;
 esac
fi