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I’m currently investigating a weird bug on my #debian sid laptop.

If I unplug ethernet, wifi connect but has only IPv6 and DNS connection, no IPv4 (I was wondering why half websites were down but not the others).

If I plug ethernet again, I have no connection at all until I restart networking.service.

It looks like network-manager is completely broken but I have no idea how to investigate this (this is a fresh Debian install, upgraded to Sid with really few packages).

Any hint?