The Multicast Routing Daemon v6 (MRD6) is an IPv6 multicast routing daemon developed by Hugo Santos. Its main features include:
The project is unsupported since 2013. The author states as a reason that native multicast forwarding support is available in Linux since 2005 and pim6sd could be used to manage it.
References
Multicast Routing Daemon v6 Wikipedia(Text) CC BY-SA