Ads in Firefox/Chrome android

Help
1

Hello,

Some weird things going on and trying to figure if there is a problem with my pi-hole or not.

-Checking with Firefox android at Test your ad blocker (in a few simple steps) - Ads-blocker.com - I CAN see ads
-Checking with Chrome android at Test your ad blocker (in a few simple steps) - Ads-blocker.com - I DONT see ads
-Checking with Firefox android+vpn* at Test your ad blocker (in a few simple steps) - Ads-blocker.com - I DONT see ads
(vpn*: connecting by 4G to my network through vpn that I have setup on my pi)

  • Some more tests on other websites I have seen the opposite. I see ads in Chrome but not in Firefox
    I can only guess this is a cache thing?

4G is always OFF while testing on my wifi.
I am not using any addons on the browsers/
I am also running avahi-daemon on my pi.

My debug token is: ub6mvt5xz9!

2

Firefox has it's own DNS setting in the browser. go to Firefox Options > General > Network Settings

And you will find the settings there. You can change it do the pi-hole there and set other options.

Here is a good thread on how DNS can be configured in Firefox:

3

After some tests I noticed that Firefox browser in my mobile is totally ignoring the pi-hole.
On dnsleaktest.com:
Firefox android gave me the dns of my ISP
Chrome android gave me the dns of Cloudflare as they are set in pi-hole

Is there a way to configure DNS over HTTPS in Firefox android?
I go to about:config and doesn't let me change the network.trr.bootstrapAddress to give my dns ip

5

You can also check configured DNS servers on Android (with & without VPN) with below ones in a terminal window:

getprop net.dns1

getprop net.dns2

getprop net.dns3

6

Οk, after a lot of more tests the conclusion is that my android phone is bypassing pi-hole most of the time. I also disabled ipv6 from router to be sure and I could still see ads in browsers and other apps. So I ended up that this is a hard coded dns thing in my phone (Samsung s8 and a Xiaomi note 5)

I tried a DNS Changer app (works like local vpn) and pi-hole worked great. But the point is that I don't wanna have an app in use to keep my custom dns up. Anyway to force that in my mobile? Changing the network settings of mobile with custom dns the pi-hole ip never worked too.

The last thing I wanna try is to setup ipv6 too for pi-hole.

8

At last a solution here:

My Speedport Entry 2i router had 2 options for ipv6.
At first i had disabled DHCPv6 server and pi-hole worked at my dekstop only. Then I noticed a service called "RA service" which i disabled it too and now mobile clients don't get ipv6 ips.
Pi-hole now works perfect in all devices but I noticed that web pages are loading way too slower now.
Is that my idea or does ipv6 do that?

9

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