I’m going to chime-in because I’m a little confused by this setup. And there’s always different setups/scenarios/challenges.
I’m on the same:
OS- Mojave 10.4.6
Dante Controller 4.2.5
I’m not sure what audio interface you’re using and/or with Dante installed? I do not have the H9000 w/Dante connected directly to my MacPro. Instead I have a PCIe Dante card installed. This is then connected to a network switch. My MacPro is also connected via/Ethernet port to this network switch. The H9000 w/Dante is also connected to the network switch. I don’t have ANY issues when I launch Dante Controller recognizing equip. Although sometimes Dante Controller forgets ‘saved’ settings. I saved a default studio setup and it’s as easy as pie reloading Dante with the equipment ON prior to executing. For me works flawless. I LOVE Dante but there’s additional expenses to setup properly.
Are you using the Dante Virtual Soundcard?? Do you have a dedicated Dante audio interface and/or network switch??? Just curious and to help others looking to setup Dante properly in a network studio. For me it was a bunch of literature reading and trial but I’m happy to share knowledge.