In May 2026, delivered two feature updates for the google/gvisor network stack focused on reliability and maintainability. Key outcomes: - Added a regression test for recvfrom SA_RESTART behavior to validate correct restart under signal interruption, reducing risk of IO syscall regressions. - Refactored ICMP Echo handling into IPv4/IPv6 private helpers to improve code reuse while preserving existing request semantics and LocalAddressTemporary behavior. These changes were implemented with clear commit hygiene and prepare the ground for a future ICMP forwarder API. Impact: improves runtime reliability for signal-driven I/O paths, enhances test coverage, and reduces code duplication, enabling safer and more maintainable networking workloads in containerized environments. Technologies/skills demonstrated: Go/C-like systems programming, regression testing, code refactoring for protocol handling, network stack tests, and disciplined commit practices.

In April 2025, delivered a focused enhancement to SagerNet/gvisor to improve promiscuous-mode ICMPv4 Echo handling with temporary-address support, enabling flexible custom processing and paving the way for advanced traffic analysis and monitoring.