Comment 4 for bug 1719747

Thank you for your reply! You're right, the host is Ubuntu, 16.04.2. I should've mentioned that.

On the Ubuntu host

$ cat /sys/module/apparmor/parameters/enabled
Y

$ snap version
snap 2.28
snapd 2.28
series 16
ubuntu 16.04
kernel 4.4.0-87-generic

In the Fedora container

# cat /sys/module/apparmor/parameters/enabled
Y

# snap version
snap 2.27.6-1.fc26
snapd 2.27.6-1.fc26
series 16
fedora 26
kernel 4.4.0-87-generic

Unfortunately there isn't an "apparmor" package on Fedora... perhaps snapd should/ could be aware of this situation and eg. detect that apparmor isn't installed even if it's seemingly enabled?