Your customer is using large network packets. And by large packets, this means packet size greater than 1514 bytes.

In computer networking, the maximum transmission unit (MTU) of a communications protocol of a layer is the size (in bytes) of the largest protocol data unit that the layer can pass …

Someone asked:

I want to capture packets from 10Gbps network card with 0 packet loss. I am using lipcap for 100Mbps NIC and it is working fine. Will libpcap be able to handle 10Gbps NIC traffic? If not what are the other alternative ways to achive this?

I answered:

You …