rmmc.c: --------- This IPv6 sample demonstrates the use of WSARecvMsg() and the IPV6_PKTINFO option to determine multicast reception on a datagram socket. WSARecvMsg is new to Windows Sockets in Windows XP. This sample requires that TCP/IP version 6 be installed on the system. A IPv6 datagram socket is created and bound and the IPV6_PKTINFO option is set. The socket is joined to multicast group and an overlapped WSARecvMsg is posted. MSG_MCAST flag is checked upon completion, upon where further processing can be made. Usage: Run rmmc.exe