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Local dns rewrite problems on android (lemmy.world)

submitted 1 week ago by marci@lemmy.world to c/selfhosted@lemmy.world

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I have some services set up which i make available with tailscale and a domain name outside my lan. Inside my home network i set up adguard dns rewrites to use the same domain for devices which are not on my tailnet. I disabled dns rebind protection in my fritzbox for these domains.

Now my problem: I don't leave my phone connected to tailscale all of the time because of high battery drain. Inside of my wifi the phone should still be able to access my services using the domain, but it is only able some of the time. My work laptop (not on my tailnet) is able to access the services.

Is the dns cached somehow in android? Is the private dns setting of android overwriting the dns i configured in my router? Where else could the problem lie? Any hints are appreciated :)

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[–] rtxn@lemmy.world 1 points 5 days ago

Right... my mistake, I guess I had SSH config entries in Termux and never questioned whether SSH was using those or DNS.

Still, try to find some way to check which server is being queried. It might reveal connectivity problems with the local DNS server.