liuxg@liuxg:~$ snap interfaces
Slot                 Plug
:camera              -
:cups-control        -
:firewall-control    -
:gsettings           -
:home                rssreader-app
:locale-control      -
:log-observe         snappy-debug
:modem-manager       -
:mount-observe       -
:network             rssreader-app
:network-bind        rssreader-app
:network-control     -
:network-manager     -
:network-observe     -
:opengl              rssreader-app
:optical-drive       -
:ppp                 -
:pulseaudio          -
:snapd-control       -
:system-observe      -
:timeserver-control  -
:timezone-control    -
:unity7              rssreader-app
:x11                 -
-                    rssreader-app:network-control
-                    rssreader-app:network-manager
-                    rssreader-app:network-observe