Im using Pi-Hole with IPV4, recently I discovered my router Xiaomi AX1800 (OpenWRT) supports IPv6, as well as my ISP (A1).

I noticed that I can assign DHCP static IPv4 assignment from the router’s interface, but I can’t do the same for IPv6. That’s why I decided to set a static IPv6 address for the machine running Pi-Hole (Raspberry Pi 2).

There is a short guide on how to do that:

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If you are using Raspberry PI as headless machine, you do not need to start the graphical server at all. It is useless when Rasbian is used as server OS and disabling it will free ~40MB of RAM.
To do so, you need to edit the /etc/X11/default-display-manager file using your favorite text editor.

$ sudo vim /etc/X11/default-display-manager

Then comment out the line

#/usr/sbin/lightdm

and add a new one

/bin/false

Save the file and reboot the machine. Voila!

Update

There is a easier way of doing it…
Just run the Rasbian configuration utility

$ sudo raspi-config

In boot option menu choose:

1. Enable Boot to Desktop/Scratch and enable Console Text.
2. Also check SSH by going in ssh and selecting Enable or disable ssh server.
3. After you quit, you’ll be asked to reboot, choose Yes.