FiOS IPTV?

[sporkme]

I'm in a bit of a spot because I'm technically under NDA, but I am in Verizon's IPTV trial.  They seemed unsure on whether I needed their router or not, so they sent me the boxes (two set-top boxes and a dvr).  So far, no dice.  The box acts as if it's doing something, and non-live TV seems fine, but any of the live TV stuff just stalls out with no picture.  I'm guessing they're using multicast based on what otehr folks asking about other IPTV services in the forums have posted, but I'm not sure.

TL;DR - anyone else here on the same trial, and if so, can you share what you did to get things working short of sticking your pfsense box behind their router and double-natting everything?