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Android: DNS-over-TLS/QUIC stops working when switching from wifi to mobile network

I've been using NextDNS for quite some time and all has been working as intended, but recently I started experiencing the issue that everytime I:

Switch from wifi -> mobile network results in the device (s23 ultra) being unable to access internet, sometimes it resolves itself after +1 minutes and sometimes I need to disable and enable the private DNS for it to work again. Jumping back to wifi results in the device being able to access internet again.

When using Cloudflares DNS and switching between wifi and mobilen network without any issues every time.

Does anyone have any idea what might be wrong?

Cheers, 

4 replies

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    • Dennis_Sievertz
    • 3 mths ago
    • Reported - view

    It seems to not always work to disable and reenable the private DNS either, so the only reliable way to have mobile network working as intended is to keep NextDNS disabled when not on wifi which sucks

    • Dennis_Sievertz
    • 2 mths ago
    • Reported - view

    Bumping this, still experiencing the same issues. Anyone have any idea?

      • A_T
      • 2 mths ago
      • Reported - view

      Without knowing what version of android or OS flavor you are running, etc: If the stock DOT implementation is giving you problems then I suggest app base solutions like Rethink app. The Rethink app  is much more than a DNS client but you can simply set it up as such. You can set NextDNS as DOH or DOT if you like.

      Perhaps this can solve the issue you are having when switching networks.

      https://github.com/celzero/rethink-app

       

      EDIT: I see you are an s23 Ultra. Interesting that you are having such issue with that phone. I'm using a pixel no issues via native DOT but for the need of a local software firewall, I use NextDNS via Rethink  app. Plus I like DOH better than DOT

       

      I

    • Dennis_Sievertz
    • 2 mths ago
    • Reported - view

    Thanks for the reply!

    The weird thing is that I've now tried out Control D instead for a week and it is working without any hiccups.

    I really like NextDNS but if this cannot be solved then I think that I will simply have to move over to Control D (and I would like to avoid using any extra app, I currently have a custom quick setting tile that I created with the help of Tasker that quickly enable/disable whatever dns I have set)

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