Release 0.0.1-3768 introduced unexpected changes in port stats for device-2-device raw TCP flows

[bortok]

Extra packets are being reported via port stats with the 0.0.1-3768 version if TCP traffic flows are set to run between IPs of emulated devices and the same IPs are configured on the ixia-c-traffic-engine container interfaces to respond to ARP.

To reproduce, use fix-230202 branch of the following lab: https://github.com/open-traffic-generator/otg-examples/tree/fix-230202/clab/ixia-c-te-frr

git clone -b fix-230202 https://github.com/open-traffic-generator/otg-examples.git
cd otg-examples/clab/ixia-c-te-frr

Previous release without the issue:

make install deploy run-d2d
make clean

output

+------+-----------+-----------+
| NAME | FRAMES TX | FRAMES RX |
+------+-----------+-----------+
| p1   |      1000 |         1 |
| p2   |         0 |      1002 |
+------+-----------+-----------+

0.0.1-3768

make deploy-clab-3768 run-d2d
make clean

output

+------+-----------+-----------+
| NAME | FRAMES TX | FRAMES RX |
+------+-----------+-----------+
| p1   |      1000 |      1006 |
| p2   |         0 |      2007 |
+------+-----------+-----------+