MIB: IF-MIB
The number of packets, delivered by this sub-layer to a
higher (sub-)layer, which were addressed to a broadcast
address at this sub-layer.  This object is a 64-bit version
of ifInBroadcastPkts.

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.