Hi: I am a newbie, and I am trying to start a multicasting project using XORP. I found that there are interfaces for getting events from IGMP (in xrl/interfacers/mld6igmp_client: add_membership4 and delete_membership4), but I could not find such interfaces provided by PIM-SM. How can I register interest and get events, such as Join/Prune? Thank you very much for help! Zhaoyu