Also known as loop-back, ::1
In computer networking, localhost is a hostname that refers to the current computer used to access it. The name localhost is reserved for loopback purposes. It is used to access the network services that are running on the host via the loopback network interface. Using the loopback interface bypasses any local network interface hardware.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).