VM on br0 can only access some docker containers on host system

I have a VM with GPU passthrough running as a daily system, and all is fine (internet works, can access unRAUD GUI), but when it comes to dockers on the host machine, it's a split thing:

• Some I can reach just fine, like Krusader, Deluge, Prowlarr (all on bridge, running host IP with their port).
• Others, like TinyMM, MKVToolNix show their top bar with a "Server disconnected (code:1006)" red X.

Docker log will show this:
 

Quote

 

14/08/2022 06:15:16 Got connection from client 127.0.0.1

14/08/2022 06:15:16 other clients:

14/08/2022 06:15:16 Got 'ws' WebSockets handshake

14/08/2022 06:15:16 Got protocol: binary

14/08/2022 06:15:16 - webSocketsHandshake: using binary/raw encoding

14/08/2022 06:15:16 - WebSockets client version hybi-13

14/08/2022 06:15:16 Disabled X server key autorepeat.

14/08/2022 06:15:16 to force back on run: 'xset r on' (3 times)

14/08/2022 06:15:16 incr accepted_client=3 for 127.0.0.1:55654 sock=11

14/08/2022 06:15:16 webSocketsDecodeHybi: got frame without mask

14/08/2022 06:15:16 rfbProcessClientProtocolVersion: read: I/O error

14/08/2022 06:15:16 client_count: 0

14/08/2022 06:15:16 Restored X server key autorepeat to: 1

14/08/2022 06:15:16 Client 127.0.0.1 gone

14/08/2022 06:15:16 Statistics events Transmit/ RawEquiv ( saved)

14/08/2022 06:15:16 TOTALS : 0 | 0/ 0 ( 0.0%)

14/08/2022 06:15:16 Statistics events Received/ RawEquiv ( saved)

14/08/2022 06:15:16 TOTALS : 0 | 0/ 0 ( 0.0%)

 

The fact that all dockers above have the same network type, the same IP and only different ports and will still not connect the same way doesn't make sense to me. Also I don't know if this is a docker issue or a VM issue, so I went to General.

Might be worth mentioning that the VM has it's own IP and all other machines on my network can access all of the dockers without issue.