During October 2024, Wiegratz enhanced firewall integration in the containers/netavark repository by upgrading the nftables Rust crate from version 0.4.1 to 0.5.0. This work involved refactoring internal API usage in the core firewall logic to align with the updated nftables interface, ensuring compatibility and maintainability. By updating dependency manifests and lockfiles, Wiegratz improved build reproducibility and future-proofed the codebase against API drift. The project leveraged skills in Rust programming, dependency management, and networking, resulting in a more robust foundation for NFTables-based firewall manipulation while maintaining stable continuous integration and release processes throughout the development cycle.