Comment 9 for bug 796588

FYI, this is a requirement for snapd, but it was deprioritized in favor of namespace stacking in support of LXD, upstreaming and other work in support of snappy (eg, gsettings mediation). A lot of work was done to support this, but the soonest it would be delivered given current priorities is 17.04.

Note, I'm only giving the current status, not setting the priority for this, but this feature is very high on the list and in the queue.