Docker Network issues

I’ve updated docker-ce to 27.3.1 on my dietpi linux today.
after that I saw a lot of connection issues between the containers.
the container lost the connection but have been able to reconnect after a few seconds.

I’ve downgraded to 27.2.0 and there I don’t have this issue. all container have a stable connection to each others.

any idea’s what this could be?

all containers have the same bridge network

I propose to look/ask in a docker forum. It seems that this is not a DietPi related issue, it might rather be a docker related issue.

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They suggest to ask here as dietpi is not an official supported system

DietPi is based in Debian and we use the official Debian Docker packages. Therefore there should be no difference as it is the very same package.

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Dietpi is using deprecated networking system. This is 1st problem.

No. Found the root issue.
Two containers got the same MAC address.
This issue is caused by portainer

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Please stop spreading nonsense. ifupdown is still the default network stack on Debian. But of course you know this …

You and everyone is free to install and use NetworkManager, if preferred.

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