Worked on the sonic-net/sonic-mgmt repository to improve test reliability and platform specificity within the continuous integration pipeline. Focused on configuration management and testing, the developer addressed a bug in the test_unknown_mac.py script by removing Marvell ASIC references from the YAML-based test configuration. This targeted change ensured that unknown MAC address tests now apply exclusively to the Cisco-8000 platform, reducing ambiguity and preventing compatibility issues across different hardware environments. By clarifying expected test behavior and maintaining code governance with a properly signed-off commit, the work enhanced CI determinism and streamlined issue diagnosis in mixed-platform test suites.