Fios Support Will not help you if the Fios Router is not first in line. Also, The boxes will not get the proper updates unless The Fios Router is first in line. The boxes will eventually slow to a crawl and stop working all together (this takes about 3 months but DOES happen at least in my area). The best way we have found to handle Fios customers is to make the system work as designed: Fios router in front with STB's connected via coax and out router off of it in the DMZ. We also set The Static NAT to our router's IP address. This actually has saved trick rolls because we can contact Verizon first and the can see if everything is up and running BEFORE we even need to go out.