Why do we have the *-806e6f6e6963 interface?

Michiel Saelen 56 Reputation points
2021-10-06T13:36:47.163+00:00

When we perform the GetAdapterAddresses call we see on every server (we tested) an entry that ends with *-806e6f6e6963.
Friendly Name: Loopback Pseudo-Interface 1

MAC: 00-00-00-00-00-00-00-00

Desc: Software Loopback Interface 1

What is the purpose of this interface and is it expected that the GetAdapterAddresses returns this interface?

Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
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  1. Limitless Technology 39,391 Reputation points
    2021-10-08T07:22:33.377+00:00

    Hello

    Thanks for reaching out.

    In my experience its loopback device is a special, virtualnetwork interface that your computer uses to communicate with itself. It is used mainly for diagnostics and troubleshooting, and to connect to servers running on the local machine.

    The loopback interface does not represent any actual hardware, but exists so applications running on your computer can always connect to servers on the same machine.

    This is important for troubleshooting (it can be compared to looking in a mirror). The loopback device is sometimes explained as purely a diagnostic tool. But it is also helpful when a server offering a resource you need is running on your own machine.

    If the reply was helpful, please don’t forget to upvote or accept as answer.

    1 person found this answer helpful.

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