this post was submitted on 21 Mar 2026
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Android

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How DNS are set on android? (europe.pub)
submitted 2 days ago by blackbeard@europe.pub to c/android@lemmy.world
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I'm using e/os and I want to be sure that, when connected to my local network, my local dns server is used, however, no matter what I do, my phone always use google's one. Is there any way to fix this?

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[–] wasu@lemmy.world 1 points 1 day ago (1 children)

I believe that using ipleak.net [...] will not show you the internal DNS server you are using within your local network.

You're right. It won't show internal one. As I mentioned I don't have internal DNS server set up, so I only used it to check whether changing DNS in wifi settings will actually take effect, and it did. That's why I believe setting it to internal one should take effect as well.

I may try to setup custom DNS in my local network when I have some free time.

[–] wasu@lemmy.world 1 points 1 day ago

Ok, I did test it.

  1. I set up DNS server on my PC using Technitium.
  2. I add zone a.local and add record with device A's IP.
  3. I add zone b.local and add record with device B's IP.
  4. On device A (Android 11) I go to Setting » WiFi and set DNS to PC's IP.
  5. On device B (Android 13) I go to Settings » WiFi and:
    • Change IP to static
    • Change both DNS1 and DNS2 to PC's IP.
  6. I ran some file served over http on both devices.
  7. I visit http://a.local/ on device B ❯ A's Files accessed
  8. I visit http://b.local/ on device A ❯ B's Files accessed

Everything works.

Note:

  • it took DNS server about 1min to add the records (idk why).
  • It seems devices caches NAME_NOT_RELOVED so if it failed it will be cached as such for at least a few minutes.