The number of MPOA Cache Imposition Replies received by this
MPC which contain the MPOA CIE Code of 0x84 - Unsupported
Internetwork Layer protocol.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and/or
re-initialization of the MPC, and at other times,
as indicated by the value of mpcDiscontinuityTime.