Teakay focused on stabilizing network federation in the hashicorp/consul repository by addressing a critical bug affecting WAN IPv6 address handling. Using Go and leveraging expertise in networking, Teakay implemented a targeted fix to ensure IPv6 addresses were properly bracketed when advertised to the WAN, resolving failures in WAN federation and improving cross-site connectivity. The solution involved validating and updating the join flooder logic to handle IPv6 formatting correctly, with changes documented in the project changelog for transparency and auditability. This work demonstrated depth in diagnosing and resolving low-level networking issues, contributing to the reliability of distributed systems infrastructure.