yeah, its sequence counter ping-pong..

linux/devices/ploc/PlocMPSoCHandler.cpp

@@ -347,6 +347,8 @@ ReturnValue_t PlocMPSoCHandler::scanForReply(const uint8_t* start, size_t remain
     triggerEvent(MPSOC_HANDLER_SEQUENCE_COUNT_MISMATCH, sequenceCount, recvSeqCnt);
     sequenceCount = recvSeqCnt;
   }
+  // This sequence count ping pong does not make any sense but it is how the MPSoC expects it.
+  sequenceCount++;
   return result;
 }