System 1.0.5000.0 2.0.0.0 4.0.0.0 System.Object To be added. Contains option values for joining an IPv6 multicast group. Constructor 1.0.5000.0 2.0.0.0 4.0.0.0 To be added. Initializes a new version of the class for the specified IP multicast group. The of the multicast group. Constructor 1.0.5000.0 2.0.0.0 4.0.0.0 The parameter specifies the interface on which data is received or sent. Initializes a new instance of the class with the specified IP multicast group and the local interface address. The group . The local interface address. Property 1.0.5000.0 2.0.0.0 4.0.0.0 System.Net.IPAddress To be added. To be added. Gets or sets the IP address of a multicast group. Property 1.0.5000.0 2.0.0.0 4.0.0.0 System.Int64 To be added. This property specifies the interface on which data is received or sent. Gets or sets the interface index that is associated with a multicast group.