On my RPi3 there is the SD card image form Domoticz with version 3.5837.
There is hooked on the RFXtrx433E form RFXCOM
By installing the "RFXCOM-RFXtrx shared over LAN interface" the poort became 6144.
When I want to add a switch, then nothing happens. (In a short test in Windows it worked well.)
The RFXtrx receiving led is reacting normally.
If there is more information needed for you to help me out, please ask. Then I can enjoy Domoticz also.