#!/bin/bash
#
ok="`ping -c 2 google.com 2>&1`"
res="$?"
if [ "$res" != "0" ] ; then
 sleep 10
 ok2="`ping -c 2 google.com 2>&1`"
 res2="$?"
 if [ "$res2" != "0" ] ; then
  echo "Failed twice ... res=$res res2=$res2 ..."
  echo -e "Ping1:\n$ok"
  echo -e "Ping2:\n$ok2"
  .... your preferred restart ...
 fi
fi