![]() ![]() In the IPv6 addressing architecture there is only a single address assigned for loopback: ::1. However, they can be used to set up multiple server applications on the host, all listening on the same port number. The address 127.0.0.1 is the standard address for IPv4 loopback traffic the rest are not supported by all operating systems. That means any packet sent to any of those addresses is looped back. IPv4 network standards reserve the entire address block 127.0.0.0 / 8 (more than 16 million addresses) for loopback purposes. For example, a locally installed website may be accessed from a Web browser by the URL to display its home page. The local loopback mechanism may be used to run a network service on a host without requiring a physical network interface, or without making the service accessible from the networks the computer may be connected to. ![]() Using the loopback interface bypasses any local network interface hardware. It is used to access the network services that are running on the host via the loopback network interface. The name localhost is reserved for loopback purposes. In computer networking, localhost is a hostname that refers to the current computer used to access it. JSTOR ( June 2020) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. ![]() Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. ![]()
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