It might be that I do not know how to use it, or that it does not work. The amount of information about how to use it is sparse and I might be missing something. I have testes this on Alpha 8 & 9 versions. What I have is: Server RPi4 with Hyperion NG Alpha 9 (192.168.1.75) that is driving the LEDs with following config: JSON Server on port 19444 Flatbuffers Server on port 19400, timeout 60s Protocol Buffers Server on port 19445, timeout 60s Forwarder is disabled Grabber RPi3 with Hyperion NG Alpha 9 (192.168.1.77) that is capturing an image from RPI camera that I want to forward to server with the following config: Flatbuffers Server is disabled Protocol Buffers Server is disabled Protocol Buffers Server is disabled Forwarder JSON clients 192.168.1.75:19444 Flatbuffer clients 192.168.1.75:19400 In the logs there is nothing that would suggest that the grabber instance connected to the server. On the grabber there is a note that the service is starting: but there is nothing on the server side to suggest that the connection came thru. The netstat on the grabber shows this: 192.168.1.110 is IP on my desktop from which I access them. Any suggestions what I missed or is it a genuine bug?