Enable receiving all Internet Group Management Protocol (IGMP) packets on the network. The socket must have address family AddressFamily.InterNetwork, the socket type must be SocketType.Raw, and the protocol type must be ProtocolType.Igmp. The current user must belong to the Administrators group on the local computer, and the socket must be bound to a specific port. This control code is supported on Windows 2000 and later operating systems. This value is equal to the Winsock 2 SIO_RCVALL_IGMPMCAST constant.