Kudos to the OP, I'm glad this got posted on hacker news because Snap is so ridiculously broken. Since 16.04, Snaps have been a huge pain for me with running LXC in production environments. By default, Snap applies updates and restarts Systemd services anytime it likes, and there's no way to turn this behavior off! The only way to get around it is to download the Snap package binary and install that directly. Then Sn…
Due to LXC now being a snap, the file is simply not there. I guess it's 5 layers deep in namespaces, overlayfs and other stuff. I was so fed up with this that I removed Ubuntu (and replaced it with Gentoo).