Developed an enhanced network flow matching and validation feature for the nvidia-holoscan/holohub repository, focusing on robust IPv4 source and destination address matching within the DpdkMgr::add_flow component. The work involved implementing advanced data validation and error handling in C++, including separating UDP destination parsing into a dedicated error-handling path to improve reliability. Introduced a conditional fallback mechanism for flexible item matching, increasing configuration robustness when standard filter fields are unavailable. Improvements also included safer defaults through zero-initialization and enhanced logging for better observability and diagnostics. Contributed to release notes and documentation, ensuring alignment with team code-quality standards.