Probably the most important change in the NetworkManager 1.2.6 update is the ability to activate multiple PPPoE network connections at the same time, which wasn’t possible with NetworkManager 1.2.4 or a previous release. Additionally, it looks like the software can now be built without polkit support, which is being used for controlling system-wide privileges. Other than that, NetworkManager 1.2.6 fixes the emission of NM-style PropertiesChanged signals and deprecates them for PropertiesChanged on the “org.freedesktop.DBus.Properties” interface, and addresses an issue that might have caused network devices to remain unmanaged after the Linux OS was resumed from sleep state.