Worked on the DataDog/cilium repository to enhance IP address handling within the Node Map module, focusing on backend development and network programming using Go. Migrated the codebase from net.IP to netip.Addr, which improved the accuracy of IP validation and strengthened error reporting throughout the module. Introduced zero-value validation for netip.Addr in key creation functions to prevent invalid entries and wrapped parse errors for better diagnosability. This refactoring reduced the risk of misaddressing and improved observability, laying a foundation for future enhancements in IP management. The work emphasized robust, maintainable code and contributed to the overall reliability of the system.