Comment 5 for bug 1715356

Clearly there isn't consensus on what it correct. The Fedora Virtualization Maintainers decided 0666, the Debian maintainers decided 0660. I think the respective mailing lists and/or bug trackers is a more appropriate place to discuss it.

I don't agree with kolla being opinionated on matters such as this. If it diverges from the expected behaviour it introduces subtle and confusing bugs, such as this.