Well, i hate having to do this (and writing about it) but when (to me atleast) i didnt get a detailed explenation what Google Analytics is doing in the HC2 and how often it is used etc, i had to look for myself.
I do NOT use Google as DNS in my HC2, i use my gateway.
I used Debookee to analyze the traffic setting my router as "Gateway" and my HC2 as "Target" and this is what i found.
Summary.
This is what a HC2 does every hour, of every day.
HC2 does:
5000! DNS requests to Google