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Weird output from TcpView v4.17

Daniel Morgenthau 1 Reputation point
2022-11-20T19:57:09.063+00:00

Hi,
I'm on Windows 10 21H2 behind a Fritz!Box 6490 Cable providing a DS-Lite connection to the internet. My local IP range is 172.31.178.0/24.

Today I stumped at the output of a TcpView window. For some TCPv6 connections (issued by searchapp.exe) the unresolved Local IP is the "temporary IP" of my adapter (according to "ipconfig") which looks correct to me while the resolved Local IPv6 is "101.0.120.0". The resolved Remote IPv6 is "38.6.40.0" which doesn't make sense to me either. What do these numbers mean?

Thank you
Daniel

Sysinternals
Sysinternals

Advanced system utilities to manage, troubleshoot, and diagnose Windows and Linux systems and applications.

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  1. Daniel Morgenthau 1 Reputation point
    2022-11-21T12:56:45.76+00:00

    My guess is that reverse DNS for temporary IPv6 just doesn't work by design and the output is just nonsense.

    Daniel

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