A communication unit is connected to both an IPv4 network and an IPv6 network for converting an IPv4 multicast packet into an IPv6 multicast packet. The communication unit, which has held the IPv6 multicast addresses, holds the IPv4 multicast addresses of a multicast group on the IPv4 network and the...http://www.google.fr/patents/US7400646?utm_source=gb-gplus-shareBrevet US7400646 - Multicast routing method and an apparatus for routing a multicast packet
Multicast routing method and an apparatus for routing a multicast packet