IPAddress.Any Field 
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Provides an IP address that indicates that the server must listen for client activity on all network interfaces. This field is read-only.
public: static initonly System::Net::IPAddress ^ Any;public static readonly System.Net.IPAddress Any; staticval mutable Any : System.Net.IPAddressPublic Shared ReadOnly Any As IPAddress Field Value
Remarks
The Socket.Bind method uses the Any field to indicate that a Socket instance must listen for client activity on all network interfaces.
The Any field is equivalent to 0.0.0.0 in dotted-quad notation.