Contributed to the systemd/systemd repository by delivering targeted improvements in low-level C programming, focusing on memory management and network programming. Addressed memory alignment and data integrity issues in pidfd-util and cgroup-util, ensuring safe casting of f_handle and preserving inode ID retrieval while reducing alignment warnings. Standardized IPv6 address handling in in-addr-util.c by adopting s6_addr* macros, which improved code consistency and maintainability. These changes enhanced the reliability of core system utilities without altering user-facing APIs, reduced memory access risks, and established a more robust foundation for future IPv6-related development and refactoring within the systemd codebase.