ill_mcast_lookup
ill = ill_mcast_lookup(v6group, ifaddr, ifindex, IPCL_ZONEID(connp),
ill = ill_mcast_lookup(&v6group, v4addr, 0, IPCL_ZONEID(connp),
ill = ill_mcast_lookup(&v6group, INADDR_ANY, index,
ill = ill_mcast_lookup(&ilg->ilg_v6group, ilg->ilg_ifaddr,