DUP ACK 's seen in the packet capture, while doing throughput testing or file transfers

Solution In Progress - Updated -

Issue

During throughput testing, large file transfers or any kind of steady data transfers, using tcp as transport, a packet capture will show, when parsed with a capture analyzer (like wireshark), "duplicate ack" packets.

The throughput and the general results of the tests are as expected (everything appears to work fine).

Environment

RHEL, any version, using tcp/ip, on an ethernet-type network (copper, fiber, or wireless/802.11)

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