Worked on the microsoft/mu_basecore repository to address a critical edge case in IPv6 prefix length validation within embedded systems. Focused on network programming using C, the developer updated assertion logic in core files to ensure that full /128 IPv6 prefixes are correctly recognized, preventing valid networks from being inadvertently excluded. The fix was delivered as a targeted cherry-pick, enabling rapid and isolated deployment for downstream consumers. This change improved standards compliance and enhanced the robustness of IPv6 connectivity validation. The work demonstrated attention to detail in embedded systems development and contributed to more reliable network stack behavior in production environments.