"network_Safety_Restart.sh start" Will move /etc/network/interfaces.org to /etc/network/interfaces and restart the server after a given time. You can stop the script by issuing a "network_Safety_Restart.sh stop"

network_Safety_Restart.sh

#! /bin/bash

PATH=/sbin:/usr/sbin:/bin:/usr/bin
. /lib/lsb/init-functions

export FILE=/etc/network/interfaces

case "$1" in
  start)
        SLEEPFOR=1200
        WAITFOR=`expr ${SLEEPFOR} / 10`
        while [  $SLEEPFOR -gt 0 ]; do
             CALC="$SLEEPFOR seconds"
             if [ $SLEEPFOR -gt "120" ]; then
                 CALC=`expr $SLEEPFOR / 60`
                 CALC="$CALC minutes"
             fi
             log_action_msg "WARNING: Will in $CALC rename ${FILE} and then restart"
             sleep $WAITFOR
             SLEEPFOR=`expr ${SLEEPFOR} - ${WAITFOR}`
             echo $(pidof bash $0)
        done
        log_action_msg "Restarting NOW"
        SUFFIX=$(date +%s)
        cp ${FILE} ${FILE}.${SUFFIX}
        sleep 1
        cp ${FILE}.org ${FILE}
        sleep 1
        reboot -d -f -i
        ;;

  stop)
        log_action_msg "Terminating restart script"
        PIDS=$(pidof bash $0)
        for mypid in $PIDS; do
             kill $mypid > /dev/null 2> /dev/null &
        done
        log_action_msg "Terminated restart script"
        exit 0
        ;;

  remove)
        update-rc.d $0 remove
        exit 0
        ;;

  *)
        echo "Usage: $0 start|stop|remove" >&2
        exit 3
        ;;
esac