$ snap interfaces
Slot                     Plug
:bluetooth-control       -
:browser-support         -
:camera                  -
:cups-control            -
:firewall-control        -
:fuse-support            -
:gsettings               -
:hardware-observe        -
:home                    -
:kernel-module-control   -
:libvirt                 -
:locale-control          -
:log-observe             snappy-debug
:lxd-support             -
:modem-manager           -
:mount-observe           -
:network                 connman
:network-bind            connman
:network-control         -
:network-manager         -
:network-observe         -
:opengl                  -
:optical-drive           -
:ppp                     -
:process-control         -
:pulseaudio              -
:removable-media         -
:screen-inhibit-control  -
:snapd-control           -
:system-observe          -
:system-trace            -
:timeserver-control      -
:timezone-control        -
:tpm                     -
:unity7                  connman
:upower-observe          -
:x11                     -
-                        connman:firewall-control
-                        connman:network-control
-                        connman:network-manager