Extra acknowledgement being sent while using exanic Kernel module for TCP session, with wrong sequence number

[AlgoQuant23]

I am implementing TCP receive functionality using the exanic library's Rx buffer reading (exanic_receive_frame API) and applying filters for our TCP connections. While I can capture our acknowledgement frames successfully, I'm also seeing additional acknowledgements, possibly from the exanic kernel module. These acknowledgements have lower sequence numbers than expected, causing issues with TCP session handling. I need to understand how to update the sequence number in the acknowledgement packet sent by the exanic kernel module or if it's possible to disable this feature.