I understand. But when you say "dummy address" are you refering to a static ip address set by me? If so, then that is not our problem. I have done that. and we also connected to router with DHCP on automatic. So he has 2 computers, a laptop and a deshtop, neither will get his lights to flash. I can have his system working on my computer, unplug the ED and plug into his and it wont work.