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!Systemd: flushing the DNS cache

July 2022 · 1 minute read

Posted in:  linux systemd networking manjaro dns 



First off I want to say, that Systemd is quite new to me and I always used the
old and classic init systems like OpenRC (which is still available on
Gentoo -- if someone cares about that more than I do).

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Now let's start right away, flushing the DNS cache on a linux box using Systemd
is not that complicated, but the correct commands should be known.

And this post is all about that:

```console
$ sudo systemd-resolve --flush-caches
```

You could also use `sudo resolvectl flush-caches` if you like or prefer.

Now verify the empty cache:

```console
$ systemd-resolve --statistics
```

I usually do not need to flush my computers DNS caches, but fiddling with my
firewall at home made me use this very often over the last few weeks.

## Sources

- <https://devconnected.com/how-to-flush-dns-cache-on-linux/>


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