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Hello everyone.

I work on RTL8169 driver on real hardware.
This is the link to the driver: https://github.com/AdeRegt/SanderOSUSB/ ... /RTL8169.c
I can send one package without problems, receiving packages go fine too. The only problem is that I am unable to send packages after this:
There is no interrupt triggered for sending the package and I cannot see a package appear on Wireshark on my laptop.

I hope someone can help

Did you set EOR bit in the last Tx descriptor? I somehow can not see it in your code.

This solved the issue, thank you very much! It was indeed the EOR flag.