Stan - just to be clear - when you are trying the 169.254.10.xxx addresses - you are logging into the camera with Internet Explorer and changing the IP there, on the camera itself?
That would be where you need to set the IP - then as soon as the address is set, you should lose access on IE.
Give it a full minute to set the new address -then plug it into the POE port and try to add as an Onvif device.
Is that how you are doing it?
Ted