Hello victorlu , you will need to set static IP of the machine so it's in the same subnet as your camera, in order for the machine to find the OAK POE camera. This procedure is also mentioned in the Getting started with POE docs:
By default, PoE devices will try to pull an IP address from DHCP. If a DHCP server isnβt
available on the network, devices will fall back to static IP 169.254.1.222. In this static
fall-back case, your computer will need to be in the same range. This can be achieved
by setting a static IP on your computer (e.g. with static IP: 169.254.1.10 and
netmask: 255.255.0.0).
Thanks, Erik