Wired device not using Pi-hole

[mskian]

I am too Facing this same issue
I use Wireguard + pi-hole
on wireless device it working well
in wired devices it does not block the ads

[mskian]

Hi i try this on My Ubuntu system 18.04 LTS - wired connection

nslookup pi.hole
Server:		1.1.1.1
Address:	1.1.1.1#53

** server can't find pi.hole: NXDOMAIN

[mskian]

Run with pi-Hole IP

Server:	10.66.66.1
Address:	10.66.66.1#53

Name:	pi.hole
Address: 10.66.66.1
Name:	pi.hole
Address: <IP V6 of the server>

[jfb]

@mskian

on My Ubuntu system 18.04 LTS - wired connection

This client is not using Pi-hole for DNS. Either it is manually assigned to Cloudflare or it is getting this assignment from the router.

[mskian]

added the 1.1.1.1 DNS on My Router
wireless connection are work well
having this issue on wired connection

[jfb]

Remove the 1.1.1.1 DNS from the router.

Why should Pi-hole be my only DNS server?

Reduced Ad Blocking Capability The main reason you should Pi-hole as your only DNS server is that you will see increased performance in the blocking of ads. If you have two DNS servers (Pi-hole and something else), your network clients may not always query Pi-hole for name resolution. If a query happens to be answered from a non-Pi-hole DNS server, your block lists will not apply (since that DNS server doesn't know about them). All Queries Need To Go Through Pi-hole First Since other DNS se…

[mskian]

replace with PI-hole DNS?
but i don't want to use it globally

[jfb]

@mskian

but i don't want to use it globally

In this case, you will need to manually map clients to use Pi-hole, or use the group management feature of Pi-hole to bypass filtering on selected devices.

https://docs.pi-hole.net/database/gravity/groups/

[mskian]

any other solution to fix this?

[mskian]

@jfb

This client is not using Pi-hole for DNS.

I use wireguard
wg0 method
so PI-hole connect via wireguard VPN

Pi-Hole DNS not Solved in Ubuntu 18.04 LTS

I install Wireguard + pi-hole on VPS Server (Ubuntu 20.04 LTS) Connect both Wireguard and Pi-hole But the issue is Ad's are not blocking in My Client System (Ubuntu 18.04 LTS) I Test on My Android Device it's work well But in My system, it does not Block the Ad's VPN only working - I use Pi-hole IP as DNS server in Wireguard

[mskian]

Finally, I Fixed this issue
By disabling Auto Dns Option
Stop Network Manager from adding DNS Servers Dynamically

nano /etc/NetworkManager/NetworkManager.conf

[main]
dns=none

• restart the Network Manager

systemctl restart NetworkManager.service

• Update the Pi-hole DNS Server on /etc/resolv.conf

nano /etc/resolv.conf

nameserver <Pi-hole DNS>
nameserver 1.1.1.1

systemctl restart NetworkManager.service

Now it's Blocking the Ad's

Wireguard + Pi-hole working well