Learn how to design and implement a reproducible network infrastructure for a building using NixOS. Explore the journey of C3D2.de, a non-commercial ISP, as they share their experience running network infrastructure for their neighbors. Discover key design decisions for both Ethernet and IP levels, and gain insights into migrating to a NixOS-based setup. Examine a public model network project and understand the challenges and solutions in creating a robust, maintainable network infrastructure. Perfect for network administrators, system engineers, and anyone interested in reproducible infrastructure deployment.