Guide to Change DNS for AdGuard Home (192.168.1.5) on Debian/Armbian and Apply to Docker 🐋

Step 1: Configure AdGuard Home DNS Settings 🌐

1. Access AdGuard Home Dashboard:

   • Open a web browser and go to:
     http://192.168.1.5:3000

2. Log in to your account.

3. Navigate to DNS Settings:

   • Go to Settings > DNS settings.

4. Configure DNS Forwarding:

   • Add public DNS servers (if needed), e.g.,
     • Primary: 8.8.8.8 (Google)
     • Secondary: 1.1.1.1 (Cloudflare)

5. Save your changes.

Step 2: Change DNS on Debian/Armbian 🖥️

Method 1: Edit /etc/resolv.conf

1. Open Terminal.
2. Edit the resolv.conf file:

   sudo nano /etc/resolv.conf
   

3. Add the following line:

   nameserver 192.168.1.5
   

4. Save and exit:
   Press CTRL + X, then Y, and hit Enter.

Method 2: Using /etc/network/interfaces:

If using /etc/network/interfaces:

1. Open Terminal.
2. Edit the interfaces file:

   sudo nano /etc/network/interfaces
   

3. Add or modify the DNS setting:

   dns-nameservers 192.168.1.5
   

4. Save and exit.
5. Restart networking service:

   sudo systemctl restart networking
   

Step 3: Configure Docker to Use AdGuard Home DNS 🐳

1. Edit Docker daemon configuration:

   sudo nano /etc/docker/daemon.json
   

2. Add or modify the following line if you have changed the Docker default folder before:

   {
     "data-root": "/mnt/docker",
     "dns": ["192.168.1.5"]
   }
   

   • Make sure to include the "dns" setting if you want to configure DNS as well.
   • The "data-root": "/mnt/docker" specifies the location where you changed the Docker data directory.

3. Save and exit:
   Press CTRL + X, then Y, and hit Enter.

   If docker have

4. Restart Docker:

   sudo systemctl restart docker
   

Step 4: Verify DNS Settings in Docker Containers ✅

1. Run a test container:

   docker run --rm busybox nslookup google.com
   

2. Check the output:
   Ensure it shows 192.168.1.5 as the DNS server.

Conclusion 🎉

You have successfully changed the DNS settings for AdGuard Home and applied them to your Debian/Armbian system and Docker! Now enjoy enhanced ad-blocking and DNS filtering!