I have connected the Behringer XR16 digital mixer via Ethernet LAN to a computer. The LAN setting of the XR18 is set to DHCP Server. On the computer the checkbox Use this connection only for resources on its network is activated in the IPv4 Routes settings.
This way the computer has as stable wired connection to the XR18 via Ethernet and is connected to the internet via wifi at the same time.
Downside: it's not possible to connect to the XR18 via wifi with any other devices like tablets or mobile phones.
Is it possible to set this up somehow?