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I've lost pretty much a whole work day to this: when #Docker is running, it messes up DHCP or routing or something and all networking on my LAN stops working.

I'm using #Ubuntu 24.04 and installed Docker from the official Docker apt repository.

This has happened before and I fixed it, but I've forgotten how.

I've googled around and found answers that say to set some things in /etc/docker/daemon.json, and to do stuff with NetworkManager and iptables, but none of it seems to work.

Has anyone else encountered this recently, and fixed it?