Hi there. I need some help urgently. I am trying to block google's dns 8.8.8.8 and 8.8.4.4 and have done the advanced routing method. 
 

However once I enter command prompt and did the 'ping 8.8.8.8 and ping 8.8.4.4', it's always a success. I need to block it. Any suggestions / solutions are most welcome.