An System.Net.NetworkInformation.IPv4InterfaceProperties object that contains IPv4 configuration data, or null if no data is available for the interface.
This property returns null for NetworkInterfaceType.Loopback interfaces.
For a detailed description of the information available for an interface that supports IPv4, see the System.Net.NetworkInformation.IPv4InterfaceProperties class documentation. Note that the object returned by the IPInterfaceProperties.GetIPv4Properties method reflects the configuration as of the time the object is created. This information is not updated dynamically.