
Wifi and mobile broadband have signal indicators and are thus more useful than vpn icons in the panel. Therefore, in the case we have both wifi/3g and VPN we prefer the former as the "primary icon" and add a lock next to it. Behavior when VPN is added to wired or other connections is still preserved: the wired icon is replaced by vpn. https://bugzilla.gnome.org/show_bug.cgi?id=672591