The "HwAddress" property

HwAddress  readable   s

Hardware address of the device. n DEPRECATED. Use the "HwAddress" property in "org.freedesktop.NetworkManager.Device" instead which exists since version NetworkManager 1.24.0.

The "Carrier" property

Carrier  readable   b

Indicates whether the physical carrier is found (e.g. whether a cable is plugged in or not).

DEPRECATED: check for the "carrier" flag in the "InterfaceFlags" property on the "org.freedesktop.NetworkManager.Device" interface.

The "Slaves" property

Slaves  readable   ao

Array of object paths representing devices which are currently enslaved to this device.