MLD Snooping (Multicast Listener Discovery Snooping) is a technology similar to IGMP Snooping (allowing switches to intelligently manage multicast traffic and route it only to ports that need it), but is used in IPv6 networks. MLD Snooping monitors MLD messages between hosts and routers, allowing switches to efficiently manage IPv6 multicast traffic and route it only to the ports that need it, thereby increasing network efficiency.