During October 2024, Song Guo contributed to the zephyrproject-rtos/openthread repository by addressing a critical issue in NAT64 mapping counters. Song identified that counters could retain outdated values when new mapping table items were allocated, potentially leading to inaccurate telemetry and diagnostics. Using C and C++, Song implemented a fix to ensure counters are cleared upon allocation, thereby improving the reliability of NAT64 statistics. To reinforce this solution, Song expanded the test suite to verify correct counter reset behavior and prevent regressions. This work demonstrated depth in embedded systems, network engineering, and testing, resulting in more accurate resource planning capabilities.