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  1. What is the loopback device and how do I use it? - Ask Ubuntu

    Apr 9, 2017 · The loopback device is a special, virtual network interface that your computer uses to communicate with itself. It is used mainly for diagnostics and troubleshooting, and to …

  2. What's a loopback-address? I.e. 127.0.0.1 - Super User

    Jun 6, 2015 · What is a loop-back address? 127.0.0.1 is a loop-back address, but what does this even mean? Please be very descriptive and give an example, as I'm having a hard-time …

  3. What is difference between localhost address 127.0.0.1 and 127.0.1.1

    Apr 6, 2016 · 127.0.0.1 is the loopback address, commonly known as localhost, which is the name that resolves to it by the local hosts file. This file is in different locations depending on …

  4. What is the 127.0.0.2 IP address for? - Super User

    Jan 7, 2021 · A datagram sent by a higher-level protocol to an address anywhere within this block loops back inside the host. This is ordinarily implemented using only 127.0.0.1/32 for loopback.

  5. Difference between localhost and the ip address - Super User

    The loopback interface is a virtual interface. It's often used to allow programs to talk to each other on the same machine. It is not a way to reference the machine IP address. 127.0.0.1 IS the IP …

  6. What's the difference between 127.0.0.1 and 0.0.0.0?

    Aug 2, 2015 · What is IP address 127.0.0.1? 127.0.0.1 is the loopback Internet protocol (IP) address also referred to as the “localhost.” The address is used to establish an IP connection …

  7. windows - Why is there a difference between ping "localhost" and …

    12 Localhost and your IP address are not the same thing. The localhost is a special software only IP Address, that is linked to your system. Localhost, or 127.0.0.1, is a loop back address. It …

  8. networking - What is the difference between 127.0.0.1 and

    Aug 18, 2022 · Can one network card only have one IP address? Why do so many networking tutorials use of 127.0.0.1 instead of "non-loopback" addresses? (I don't mean to generalize, …

  9. Why is there more than one loopback IP address? - Super User

    Sep 30, 2015 · Why is there more than one loopback IP address? The class A network number 127 is assigned the "loopback" function, that is, a datagram sent by a higher level protocol to a …

  10. How do you get loopback addresses other than 127.0.0.1 to work …

    A datagram sent by a higher level protocol to an address anywhere within this block should loop back inside the host. This is ordinarily implemented using only 127.0.0.1/32 for loopback, but …