Weird result while testing DNS-Over-TLS configuration

Used this method to configure DNS-Over-TLS /etc/config/dhcp looks like this.

However, while restarting dnsmasq I get this.

# /etc/init.d/dnsmasq restart
udhcpc: started, v1.28.4
udhcpc: sending discover
udhcpc: no lease, failing

I failed to undersatnd above error but still I dared and tested DNS and dnsleaktest result looks good I guess

Now the weird part,

I also tested DNS on

Firefox result : Imgur

Chrome result : Imgur

Firefox and Chrome with tutorial result : Imgur

OpenWRT 18.06 Adblock 3.6-5.2

I tested these multiple times to be sure getting the same result.

Call me silly but something is weird.

cat /etc/resolv.conf

And what is

# cat /etc/resolv.conf
# Interface wan

what is ?

My routers IP

It doesn't work well with Adblock, you should use split DNS mode and restart Stubby:

/etc/init.d/stubby restart

If your router and DHCP server is the same device, then you don't need to push this IP as the DHCP option.

Note that some browsers have pre-configured DNS over HTTPS, or pre-installed Tor plugins, or the like.
When those features are not disabled specifically, the test results are unreliable.

Also your DNS leak test shows 2 different countries which may be an incorrect GeoIP match or not.
So, it may affect the test result because the replies from those servers may be different.

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Can you tell me from where do I remove and replace it with what?

Also I used to have pihole so I've added

config domain

shall I remove it?

I've read people are using with adblock without any issues

It works fine in split DNS mode.
Otherwise Adblock fails to download the blocklists and/or Stubby fails to start upon system startup.
There's a race condition between these services.

So, you don't have it anymore?
What role does it perform if you still have it?

uci -q delete dhcp.lan.dhcp_option
uci commit dhcp
service dnsmasq restart

And reconnect the LAN clients to apply the changes.

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Currently nothing. I'm still figuring out something new to do with rpi.

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