Comment 14 for bug 386900

It is fixed in the notification bubbles, which is what this bug was reported about.

The window you have shown is designed to present multiple wired interfaces, if there are any. Unfortunately, as far as I know, the names like "eth0", "eth1", "eth2" etc are the only unique identifiers we have for them. If there is a better way they could be named, that is something the Linux kernel developers would need to fix.