If your ``debian-11 template based AppVm is set with NetVM to none, then you shiould get something like this on trying sudo apt update
Err:1 Index of /r4.1/vm/ bullseye InRelease
Temporary failure resolving ‘deb.qubes-os.org’
…
Reading package lists… Done
Building dependency tree… Done
Reading state information… Done
All packages are up to date.
W: Failed to fetch https://deb.debian.org/debian/dists/bullseye/InRelease Temporary failure resolving ‘deb.debian.org’
…
W: Failed to fetch https://updates.signal.org/desktop/apt/dists/xenial/InRelease Temporary failure resolving ‘updates.signal.org’
W: Some index files failed to download. They have been ignored, or old ones used instead.
But, if it’s the output is something like this
sudo apt update
…
16 packages can be upgraded. Run ‘apt list --upgradable’ to see them.
Then I suspect that it is a template you are talking about.
If you still claim it is AppVm, please describe how you created it, with commands, etc… Or try to create new one based on debian-11 template, switch the net to none, and try again
Sorry, @51liea, I didn’t see your post.