MAC address randomization Note that Ethernet connections can still be tracked via switch ports, and WiFi connections can be broadly localized by access point. Furthermore, MAC address spoofing and randomization depends on firmware support from the interface. Most modern network interface cards support the feature. There are three different aspects of MAC address randomization in NetworkManager, each with their own configuration flag: WiFi scanning [device] wifi.scan-rand-mac-address=yes WiFi connections [connection] wifi.cloned-mac-address= Ethernet connections [connection] ethernet.
MAC address randomization
            WiFi scanning
            WiFi connections
            Ethernet connections
            Mode options
        Setting a default configuration
        Per-connection overrides
        Seeing the randomized MAC address
    Remove static hostname to prevent hostname broadcast
        Disabling transient hostname management
    Disable sending hostname to DHCP server
        Verifying proper operation
    Sources