I have an odd one here.
My rbfeeder setup went smoothly, and airplane positions show up in /var/log/rbfeeder.log, but my Sharing Key is not found in RadarBox, and according to rbfeeder.log no packets are sent.
A snapshot from rbfeeder.log:
2021-05-21 16:44:07] Starting RBFeeder Version 0.4.1 (build 20210414164501)
[2021-05-21 16:44:07] Using configuration file: /etc/rbfeeder.ini
[2021-05-21 16:44:07] Network-mode enabled.
[2021-05-21 16:44:07] Remote host to fetch data: 127.0.0.1
[2021-05-21 16:44:07] Remote port: 30005
[2021-05-21 16:44:07] Remote protocol: BEAST
[2021-05-21 16:44:07] System: rblc2
[2021-05-21 16:44:07] Start date/time: 2021-05-21 16:44:07
[2021-05-21 16:44:07] Socket for ANRB created. Waiting for connections on port 32088
[2021-05-21 16:44:09] Connection established.
[2021-05-21 16:44:10] [471F6E] P: 20620.646 vtas: 456.000 vias: 245.000 Alt: 38025 mach: 0.776 VTAS: 456.000 VTAS2: 234.586 Temp: 227.401 (-45.749 C) Temp 2: -50.377 Temp 3: -25.084
[2021-05-21 16:44:13] [471F6E] P: 20620.646 vtas: 456.000 vias: 245.000 Alt: 38025 mach: 0.776 VTAS: 456.000 VTAS2: 234.586 Temp: 227.401 (-45.749 C) Temp 2: -50.377 Temp 3: -25.084
[2021-05-21 16:44:16] [471F6E] P: 20620.646 vtas: 456.000 vias: 245.000 Alt: 38025 mach: 0.776 VTAS: 456.000 VTAS2: 234.586 Temp: 227.401 (-45.749 C) Temp 2: -50.377 Temp 3: -25.084
[2021-05-21 16:44:19] Could not start connection. Timeout.
[2021-05-21 16:44:19] [471F6E] P: 20620.646 vtas: 456.000 vias: 245.000 Alt: 38025 mach: 0.776 VTAS: 456.000 VTAS2: 234.586 Temp: 227.401 (-45.749 C) Temp 2: -50.377 Temp 3: -25.084
[...]
[2021-05-21 16:44:37] ******** Statistics updated every 30 seconds ********
[2021-05-21 16:44:37] Packets sent in the last 30 seconds: 0, Total packets sent since startup: 0
[2021-05-21 16:44:37] Data sent: 50 B
[2021-05-21 16:44:37] Data received: 0 B
[...]
This "Connection established" and "Could not start connection. Timeout." happens in regular intervals, and each 30s the statistics are shown that there are 0 packets sent.
So to me it looks dump1090 is working fine, rbfeeder is receiving its data but no packets are sent to RB.
Any clues where I should be looking? The RPi resolves radarbox24.com and radarbox.com