I can confirm this - just had it happen on one of my camera’s.
Because you cannot set a hardcoded IP address on the camera, and because upon boot-up of the camera it sometimes does not bind the software MAC address to the device before the device asks for a DHCP address, the camera will switch IP addresses.
It is not related to setup like I initially thought and had experienced.
@UserCustomerGwen - I apologize for pinging you, but is there going to be an RTSP firmware update that will address this issue? There’s no way to assign 2 MAC addresses to 1 IP address from a DHCP server point of view (as it’s invalid) and having 2 streams for one camera is also a pain to manage.