Comment 6 for bug 1784501

@mpontillo Bionic has always suffered from this bug. The patch set has only been backport to Cosmic and the fixes have not yet been backported to Bionic.

Have you, by chance, recently reconfigured your container to be an unprivileged container when it was previously a privileged container? (I don't know if this is actually possible to do in LXD but it would cause this bug to start affecting your container)