Ubuntu 16.04: Where is the network configuration?

I am using Ubuntu 16.04. In the past, I have always configured my network through the /etc/network/interfaces file but for this install, I have used the 'Edit Connections' option from the Gnome taskbar network menu. My network is configured and works, but the interfaces file just contains

auto lo
iface lo inet loopback

So, where is the actual configuration for the network stored and why is it not in the interfaces file?


If you setup a connection using Network Manager, it is stored in

/etc/NetworkManager/system-connections/

A file for each connection is created there.