portHistCurrentOutMulticastPkts — Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community), Edgecore MIB copies (Observium Community)
The total number of packets that higher-level protocols requested be transmitted, and which were addressed to a multicast address at this sub-layer, including those that were discarded or not sent. For a MAC layer protocol, this includes both Group and Functional addresses.