A network stack is being implemented in a browser extension to solve communication problems between its components. The stack consists of multiple layers, each solving specific issues such as routing and packet size constraints. The link layer handles direct communication between connected components, the packet layer routes packets to the correct component, the datagram layer chunks large messages for efficient sending, and the application layer provides a standardized send/receive pattern. This layered approach abstracts away underlying messaging API differences, message size constraints, and other issues that previously caused problems in the extension's communication system.