Apple TV doesn't send Ethernet MAC in DeviceInformation

The queries in Network information queries are available if the MDM host has a Network Information access right. Reference doc

• We have set the maximum access right available (8191).

EthernetMACs - The key to get the Ethernet MAC addresses. This value requires the Network Information access right, and is available in iOS 4 and later, and tvOS 6 and later. Reference doc.

• The TV OS version of the device we are referring here is 14+.
• The query dictionary contains the EthernetMACs key.

Code Block 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>CommandUUID</key>
	<string>DeviceInformation</string>
	<key>Command</key>
	<dict>
		<key>RequestType</key>
		<string>DeviceInformation</string>
		<key>Queries</key>
		<array>
			<string>DeviceName</string>
			<string>OSVersion</string>
			<string>BuildVersion</string>
			<string>ModelName</string>
			<string>Model</string>
			<string>ProductName</string>
			<string>SerialNumber</string>
			<string>DeviceCapacity</string>
			<string>AvailableDeviceCapacity</string>
			<string>BatteryLevel</string>
			<string>CellularTechnology</string>
			<string>IMEI</string>
			<string>MEID</string>
			<string>ModemFirmwareVersion</string>
			<string>ICCID</string>
			<string>BluetoothMAC</string>
			<string>WiFiMAC</string>
			<string>CurrentCarrierNetwork</string>
			<string>SIMCarrierNetwork</string>
			<string>SubscriberCarrier-Network</string>
			<string>CarrierSettingsVersion</string>
			<string>PhoneNumber</string>
			<string>VoiceRoamingEnabled</string>
			<string>DataRoamingEnabled</string>
			<string>IsRoaming</string>
			<string>SubscriberMCC</string>
			<string>SubscriberMNC</string>
			<string>CurrentMCC</string>
			<string>CurrentMNC</string>
			<string>UDID</string>
			<string>IsSupervised</string>
			<string>IsDeviceLocatorServiceEnabled</string>
			<string>IsActivationLockEnabled</string>
			<string>IsDoNotDisturbInEffect</string>
			<string>iTunesStoreAccountIsActive</string>
			<string>EASDeviceIdentifier</string>
			<string>EthernetMACs</string>
			<string>PersonalHotspotEnabled</string>
			<string>LastCloudBackupDate</string>
			<string>IsCloudBackupEnabled</string>
			<string>IsMDMLostModeEnabled</string>
			<string>ServiceSubscriptions</string>
			<string>Languages</string>
			<string>Locales</string>
			<string>DeviceID</string>
			<string>OrganizationInfo</string>
			<string>AwaitingConfiguration</string>
			<string>MDMOptions</string>
			<string>iTunesStoreAccountHash</string>
			<string>SIMMCC</string>
			<string>SIMMNC</string>
			<string>OSUpdateSettings</string>
			<string>LocalHostName</string>
			<string>HostName</string>
			<string>CatalogURL</string>
			<string>IsDefaultCatalog</string>
			<string>PreviousScanDate</string>
			<string>PreviousScanResult</string>
			<string>PerformPeriodicCheck</string>
			<string>AutomaticCheckEnabled</string>
			<string>BackgroundDownloadEnabled</string>
			<string>AutomaticAppInstallationEnabled</string>
			<string>AutomaticOSInstallationEnabled</string>
			<string>AutomaticSecurityUpdatesEnabled</string>
			<string>IsMultiUser</string>
			<string>MaximumResidentUsers</string>
			<string>PushToken</string>
			<string>DiagnosticSubmissionEnabled</string>
			<string>AppAnalyticsEnabled</string>
			<string>IsNetworkTethered</string>
		</array>
	</dict>
</dict>
</plist>

Code Block 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CommandUUID</key>
    <string>DeviceInformation</string>
    <key>QueryResponses</key>
    <dict>
        <key>AwaitingConfiguration</key>
        <false/>
        <key>BluetoothMAC</key>
        <string>xx:xx:xx:xx:xx:xx</string>
        <key>BuildVersion</key>
        <string>xxxxxxx</string>
        <key>DeviceID</key>
        <string>xx:xx:xx:xx:xx:xx</string>
        <key>DeviceName</key>
        <string>***</string>
        <key>IsSupervised</key>
        <true/>
        <key>MDMOptions</key>
        <dict/>
        <key>Model</key>
        <string>MR912LL</string>
        <key>ModelName</key>
        <string>AppleTV</string>
        <key>OSVersion</key>
        <string>14.0.2</string>
        <key>ProductName</key>
        <string>AppleTV5,3</string>
        <key>SerialNumber</key>
        <string>xxxxxxxxxx</string>
        <key>UDID</key>
        <string>xxxx</string>
        <key>WiFiMAC</key>
        <string>xx:xx:xx:xx:xx:xx</string>
        <key>iTunesStoreAccountIsActive</key>
        <false/>
    </dict>
    <key>Status</key>
    <string>Acknowledged</string>
    <key>UDID</key>
    <string>***</string>
</dict>
</plist>