GUYS HELP CLICK THIS THREAD

OK SO I USED THIS SCRIPT AND OPENED 12 TERMINAL WINDOWS WITH MY FRIENDS IP sudo -s ping -f (I AM A MAC USER) NOW THE ATTACK HAS BEEN STOPPED REALLY LONG for like an hour and he is still unable to connect to the internet!? he has a netgear router can someone help? what do i do?

Idk if this will work but just restart the computer and router

Buy a new computer (and get windows)