Dave Rigby Thank you for the comprehensive explanation. As for your conclusion:

I propose this issue is resolved as "Not a Bug / Known Error" or similar; referring back to the Docker documentation about this not being a fully supported configuration.

I agree, if it is true that the Linux aarch64 ns_server binaries (godu, etc) can run in a Docker image on an M1 Mac. Again, my understanding was that this is NOT true; however I'm having trouble finding the source of that information, so it's quite possible I crossed some wires as well. Based on Ming's last comment, it sounds like this may work after all.

I'm assigning to myself to get to a final answer.

Remove NS_SERVER as it is not clear to me if we need to do something on our end. Please re-add and clarify ask if needed.

As confirmed by Ian McCloy and others, the newly-created Linux aarch64 Docker image does work OK on M1 Macs. So my initial information here was incorrect, and there is no need to fix anything.

The current bug title doesn’t match the rationale for closing - the x86_64 Linux images still have problems. Either this needs the title changing to refer to aarch64/Linux Docker images, or it needs re-opening.

Dave Rigby You're not wrong - I'll re-close it as "Will Not Fix". The initial bug was legit, but the solution is "use the aarch64 image (once it's available)".