Worked on enhancing firewall integration within the containers/netavark repository by upgrading the nftables Rust crate from version 0.4.1 to 0.5.0. This involved refactoring the core firewall manipulation logic in Rust to align with the updated nftables API, ensuring compatibility and maintainability. Updated dependency manifests and lockfiles to reflect the new versions of related crates, supporting reproducible builds and stable CI processes. Focused on dependency management, firewall configuration, and networking, the work reduced the risk of API drift and positioned the codebase for future updates, while maintaining a stable release cycle and improving long-term project reliability.