mcjoin is a very simple and easy-to-use tool to test IPv4 and IPv6
multicast. It features:

    *   an optional multicast generator (server)
    *   an end device that can act as a data sink (client)
    *   supports joining one or more groups:
        *   ASM (*,G) support
        *   SSM (S,G) support
    *   IPv4
    *   IPv6

WWW: https://github.com/troglobit/mcjoin
