RAK 831 Pilot GW not communicating with GW Bridge (Docker-compose + windows 10 host)


Docker host and LoRaWAN GW are on the same physical subnet.

Within Docker, the LoRa Server containers are on a subnet. All started successfully success using “docker-compose up”

DockerNAT ethernet is showing on (same subnet as Windows Docker Desktop indicates for the internal virtual switch).

The GW is a RAK831 Pilot (confirmed operating correctly with TTN).

GW local config …

$ more local_conf.json
“gateway_conf”: {
“gateway_ID”: “b827ebfffe1dd42f”,
“server_address”: “”,
“serv_port_up”: 1700,
“serv_port_down”: 1700,
“serv_enabled”: true

Wireshark on the host sees no unicast traffic arriving from this GW to the host’s interface, but does capture some multicast traffic from the GW. No changes were made to docker-compose.yml, which exposes port 1700 for the GW bridge.

Where is my GW traffic?


Did you configure proxies?


For easiest configuration you can try docker-compose


No proxy is confugured


Please explain how this will help


Did you check yours firewall configuration?


I believe Wireshark sees any traffic prior to the firewall, so FW should not be impacting what I see in Wireshark. However, I did confirm that port 1700 (GW bridge) is open for UDP. All I am seeing in Wireshark is a few MDNS queries and responses issued from the GW at

This is starting to smell more like this is a problem with the RAK.


Ok, show yours lora-gateway-bridge.toml
and gateway-bridge logs.

Did you try to install gw bridge on yours gateway and connect via MQTT?


Problem solved with assist from …

Adding “server_address” to local_conf.json fixed the issue. I was making this change in the wrong copy of the file.

The RAK 831 Pilot GW is now communicating with my instance of LoRaServer.