Keep TPLink Powerline alive by pinging it constantly

pingpong

#!/bin/bash

GATEWAY=`route get default | grep gateway | awk '{ print  }'`
SCRIPT_COMMAND="ping $GATEWAY"
SCRIPT_PID=/tmp/pingpong.pid

case "$1" in 
start)
    $SCRIPT_COMMAND 1>/dev/null &
    echo $!>$SCRIPT_PID
    kill -SIGCONT `cat $SCRIPT_PID`
    ;;
stop)
    kill -SIGINT `cat $SCRIPT_PID`
    rm $SCRIPT_PID
    ;;
restart)
    $0 stop
    $0 start
    ;;
status)
   if [ -e $SCRIPT_PID ]; then
      echo $0 is running, pid=`cat $SCRIPT_PID`
   else
      echo $0 is NOT running
      exit 1
   fi
   ;;
*)
   echo "Usage: $0 {start|stop|status|restart}"
esac

exit 0 

It is a known fact that TP-Link powerline adapters randomly disconnect, which is really annoying (so don't buy them).
If you did buy them, and are experiencing this issue, you can try and fix it by constantly pinging your router, which would keep the connection alive (hopefully).
This script automates that.
Just run pingpong start on boot and you should be fine.