During June 2025, Theo Manea enhanced the derailed/cilium repository by improving its documentation to clarify kernel configuration dependencies for CONFIG_FIB_RULES on embedded and ARM-based Linux systems. Theo used reStructuredText (rst) to update the system requirements, detailing how CONFIG_FIB_RULES depends on related routing options and recommending the use of the scripts/config utility to ensure proper activation. This documentation work focused on reducing misconfiguration risks and support overhead for deployments on resource-constrained devices. Theo’s contribution demonstrated a strong grasp of Linux kernel configuration and technical writing, resulting in clearer guidance for users managing ARM-based environments.