Does this help (taken from Steve Todd's excellent website about Raspberry Pi.?https://mstevetodd.com/rpi
Merry Christmas
Stefan
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Remote copy of JMRI
JMRI provides some excellent tools for "sharing" a physical connection to your layout. ?One of these is the??LoconetOverTCP server (Digitrax-only). ?To use this, connect a separate computer to the RPi-JMRI wifi network. ?Start JMRI, and in Connections, specify Digitrax, LocoNetOverTCP LbServer. ?Enter the RPI's address "192.168.6.1", Save and restart. ?When JMRI comes up, you will be running a full copy of JMRI, with full-screen access to decoder programming, panels, etc.
For non-Digitrax layouts, follow the above steps, but specify JMRI Simple Server (Note: this server has some limitations)."