Docker breaks network after short period

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Just installed a clean Debian 12 with Docker, and ran into the very same issue. After some seconds, the connection drops and it only returns if I stop the Docker container(s).

This issue is driving me insane!

What should the value of “NetworkInterfaceBlacklist” be?

EDIT: Figured it out. What worked for me was:

# Open '/etc/connman/main.conf', uncomment NetworkInterfaceBlacklist and change to:
NetworkInterfaceBlacklist = vmnet,vboxnet,docker,veth
# Restart connman daemon
systemctl restart connman.service
# Start your container - issue should be gone
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