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Reaching an internal service meant installing the agent, which needs root for a TUN device. nblink runs the embedded client in netstack mode and forwards local HTTP listeners to upstreams inside the tunnel, so it works on managed machines and in rootless containers. Upstream names resolve in-process. Forwards bind loopback unless --allow-public-bind is given. The listener refuses rebound and cross-site browser requests and bounds stalled request bodies. It ships as release archives and a distroless image that runs under an arbitrary UID. An embedded client given no StatePath now keeps its state in memory rather than falling back to the installed agent's state file, which every embedded client in a proxy process also shared. The state manager gets an explicit in-memory store for it.