Hi,
I just encountered that there are some command typos in “or if you prefer to use jackdbus” on wiki page https://wiki.moddevices.com/wiki/Audio_Through_USB.
Correction offer:
jack_control eps realtime true eps realtime-priority 80
jack_control ds net dps multicast-ip 192.168.51.1 dps client-name mod-slave
jack_control dps input-ports 2
jack_control dps output-ports 2
jack_control dps midi-in-ports 1
jack_control dps midi-out-ports 1
jack_control dps latency 4
jack_control dps auto-save true