module for sending and receiving IPv4 and IPv6 multicast messages

 The IO::Socket::Multicast6 module subclasses IO::Socket::INET6 to enable you
 to manipulate multicast groups. With this module you will be able to receive
 incoming multicast transmissions and generate your own outgoing multicast
 packets.
 .
 IO::Socket::Multicast6 uses the same API as IO::Socket::Multicast, but with
 added support for IPv6 (IPv4 is still supported). Unlike
 IO::Socket::Multicast, this is a pure-perl module.