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Explore how to bring declarative networking principles to Kubernetes environments in this 35-minute conference talk from DevConf.CZ 2025. Learn about the challenges of integrating imperative host networking with Kubernetes' declarative API model and discover how the NMstate project provides a solution through its Declarative Network API. Examine the latest 2025 features designed for air-gapped environments and large-scale deployments with hundreds of nodes and VLANs. Understand how NMstate seamlessly integrates with both containerized workloads and virtual machines through KubeVirt compatibility. Discover the technical implementation of how a Kubernetes cluster with NMstate Operator manages networking on its deployment nodes, including built-in protection mechanisms against destructive network changes that could compromise cluster stability. Gain insights into managing complex network topologies in modern Kubernetes environments and see practical demonstrations of declarative network management in action.
