The IP address of a computer should never be known. It should be impossible to ping a computer directly. DNS servers should be the proxy who get requests and fetch data on behalf of a client. They cache and mask DoS attacks. Clients and user-facing machines only communicate with proxies
This "solution" is about on the same level as saying that you just have to pour more stronger lasers into a bigger thicker metal cage that contains hydrogen in order to obtain fusion reactors. That won't get you the pressure and temperatures you want yet? MOAR LAZOR!
