Marko Zajc developed a feature for the DragonBluep/openwrt repository that enhances dnsmasq configuration by introducing an address_as_local flag, enabling local-first DNS resolution for specified addresses. This approach prevents unnecessary upstream lookups, reducing external DNS traffic and streamlining domain management for administrators. Marko utilized shell scripting and applied skills in Linux administration, DNS management, and network configuration to implement this change. The work focused on integrating the new option into OpenWrt’s dnsmasq setup, ensuring clear commit documentation and readiness for code review. The feature addressed performance and reliability by prioritizing local resolution, reflecting a focused and well-scoped engineering effort.