Connect IP camera to switch to Ubuntu laptop, no external router

I have a Swann IP Camera connected to a PoE unmanaged switch. The switch is connected directly to my Ubuntu laptop with an ethernet cable. There is no wifi involved and no router - no other devices exist (the laptop does have a wifi interface, but it's not connected to wifi). I'm not trying to get internet access - I just want to use the camera through the laptop. Do I need to set up my laptop as a router using software or is there some other way? Ubuntu 22.04 Switch is Netgear Unmanaged Switch (GS108LP) Camera is Swann SWNHD-880CAM -- UPDATE -- I hooked up an old router to the switch and it d

Question by Edward on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.