Due to a problem with the Intel® Arria® 10 and the Intel® Stratix® V versions of the Intel® Low Latency 40-Gbps Ethernet IP, runt packets may be incorrectly forwarded to the user logic as good packets.
The MAC register counters 0x900/0x901 CNTR_RX_FRAGMENTS and 0x904/0x905 CNTR_RX_FCS will not count these runt frames.