[Help] Docker container loses network after restart on TOS 5

[roseblack]

Hi everyone,

I’m running Docker on my TerraMaster NAS (TOS 5), and I’ve run into a strange issue. Every time I restart the NAS, some of my containers start normally but lose network connectivity — they can’t access the internet or be reached from other devices on my LAN.

I’ve already checked:

Network mode is set to bridge
Ports are correctly mapped
Firewall is disabled for testing

Restarting the container manually sometimes fixes it, but not always.

Has anyone experienced something similar or knows what could cause Docker containers to lose network after a system reboot? Any suggestions would be really appreciated.

[EriChan]

Thank you for your feedback.

May I ask what specific version of TOS 5 you are using? And what is the version of Docker Manager?

Based on the information you provided, when the issue recurs, you can try the following troubleshooting and solutions:

1. Restart the Docker service

Code: Select all

service docker restart

2. Use a "custom bridge network" instead of the default bridge
Steps:

• Create a new bridge network in Docker Manager (for example, name it my_app_net).

• Change the container’s network from bridge to my_app_net.

If the problem persists after trying the above methods, please send us the relevant logs of the containers experiencing network loss for further analysis.