Worked on the zephyrproject-rtos/openthread repository to enhance IPv6 route selection reliability within the Thread mesh forwarder. Addressed a routing issue by replacing a deprecated OMR-based check with the IsOnLink method, ensuring that the mesh forwarder accurately identifies and routes traffic destined for on-link addresses within the Thread network. This targeted fix, implemented in C++ and leveraging expertise in embedded systems and network protocols, reduced the risk of misrouted packets and improved overall IP routing reliability. The contribution focused on a single, well-defined bug, demonstrating a precise and effective approach to maintaining robust network protocol behavior in embedded environments.