MIB: IF-MIB
The total number of packets that higher-level protocols
requested be transmitted, and which were addressed to a
broadcast address at this sub-layer, including those that
were discarded or not sent.  This object is a 64-bit version
of ifOutBroadcastPkts.

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 ifCounterDiscontinuityTime.