This enhancement is new in the Solaris Express 6/05 release and in the Solaris 10 1/06 release.
Enhancements have been made to the Multicast Listener Discovery (MLD) protocol, for IPv6, and the Internet Group Management Protocol (IGMP), for IPv4. The Solaris implementation of these protocols has been enhanced to support MLDv2 and IGMPv3. These extensions provide support for source address filtering on multicast traffic. Also included is support for IETF-specified socket extensions. This support enables applications to take advantage of source-filtered multicasting.