Artnet on Nanohog

Hi,
We have purchased some lighting fixtures (Chavuet Epix Bars and the Chavuet Epix drive 642) and have no idea on how to get them to work with the road hog. these fixtures are not in the fixture schedule and i am not sure if they need to be, but we have been trying to wire them up using a Ethernet cable running from the computer to the epix drive, where the fixtures are connected. i have watched the Hog4 tutorial on the youtube channel and we have tried to do the same thing, but each time we change the IP address, it goes back to the default and will not keep what we change after applying it and exiting out. What is going on and how can we get these fixtures to work with the NanoHog4. we are using Hog4pc with the Nanohog, and need help with art net. the fixtures only have inputs for ethernet cables and don't have dmx inputs. Can someone guide us in the right direction on what to do to get these working. we need them up and running by Easter 2016. THANKS