Hello all,

I have an external wireless network connected to the internet (192.168.0.0) and an internal, isolated ethernet network for local file transfers only (10.0.1.0), with separate DHCP servers. All machines connect to both networks except for the wireless network's DHCP.

I want machines to access the internet via WiFi but LAN via ethernet. But when I set the service order to prefer ethernet over WiFi, it routes all traffic to the ethernet first, even external ones. As a result, the machines cannot access the internet in this configuration.

When I set WiFi above ethernet, I can access the internet but since all machines are connected to both networks, local traffic is also routed through the wireless network when specified through multicast. For a variety of reasons, having to input the machines' IP addresses directly are not practical for my application.

Does anyone know how one would make ethernet be preferred over WiFi for local transfers only?

Thank you

I did not find the right solution from the internet
References : https://forums.macrumors.com/threads/set-to-prefer-ethernet-for-local-transfers-only.2017493/


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