Ivan Pepelnjak created NetLab to streamline networking lab setup, automating tasks like IP assignments, routing protocols, VLANs. The podcast discusses challenges faced, flexibility of creating custom data models, and creating plugins for BGP and RIP behaviors. It also covers setting up lab environments with storytelling through code comments, repurposing old equipment, and leveraging NetLab for streamlined configurations. Platforms supported by NetLab include VPTX and Nokia SR Linux, emphasizing community involvement in contributions.