57153908_Net_SNMP__Description
[Name] 38 ipSystemStatsOutMcastPkts [Type] COUNTER [Access] ReadOnly [Description] 
The number of IP multicast datagrams transmitted. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ipSystemStatsDiscontinuityTime.
Net-SNMP
Description