Very similar thing here: We need to reliably identify cameras which have been preconfigured using GenICam Device Configurator. We used open_port() to do that in the past, but going for an update made it stop working for ports > 0 (program just exits, no error or anything, similar to https://forum.commonvisionblox.com/t/cant-open-devices-for-port-0/1669)
Sure MAC addresses, IPs or serials could be used, but given that there are several sets of cameras those things are basically meaningless and would need another layer of mapping. As long as the CamPort (position within the set) is identical, configuration would be fine. open_port() was the easiest thing to go for instead of discover and filter in some complicated manner…