Bug#808364: lxc: lxc-start fails to mount proc (Operation not permitted)

[Tomassino Ferrauto <tomassino.ferrauto@gmail.com>]

I confirm that the problem exists and that downgrading to kernel
version 3.16.7-ckt11-1+deb8u6 makes (unprivileged) container work
again. I also found this bugreport in Ubuntu which may be related:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1519106

        Tomassino