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?

  • BlackbeardOPEnglish
    1·
    3 days ago

    Yes but how do you know that is using that? I mean, did you try to resolv a local address? I have test it using a Terminal (termux) - If I use did and seems to report all the time, regardless of which connection and despite setting my local DNS setting on a static configuration for the wifi. Is this the same for you? can you share some screenshot?

    • wasu@lemmy.worldEnglish
      1·
      2 days ago

      I visited http://ipleak.net/ to check which dns is used.
      In Termux nslookup will use 8.8.8.8, but I suspect it takes it from Termux environment that doesn’t sync with android settings.

      • BlackbeardOPEnglish
        1·
        2 days ago

        Are you sure? I believe that using ipleak.net will provide you with a detailed report of your public IP address, DNS servers, WebRTC status, and other network-related information. However, it will not show you the internal DNS server you are using within your local network.

        You are right that Android’s system-wide DNS settings (e.g., those configured in Wi-Fi or mobile network settings) are not automatically applied to Termux. Termux runs in a sandboxed environment and manages its own network configuration. I will try changing Termux but keep in mind that the reason I checked Termus is because local dns resolution do not work on all my android devices, I can resolv local addresses only if I connect to my home network remotely using a vpn.

        • wasu@lemmy.worldEnglish
          1·
          2 days ago

          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.worldEnglish
            1·
            2 days 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.