How to Change DNS On Debian 12?

Debian 12 primarily uses systemd-resolved to manage DNS settings. This is the most reliable way to change your DNS servers.

Here are the steps:

1. Open the Terminal

• Access your command line interface.

2. Edit the resolved.conf File

• Type the following command and press Enter:

su
nano /etc/resolved.conf

3. Specify Your DNS Servers

• Inside the file, look for the [Resolve] section.
• Find the lines that start with #DNS= and #FallbackDNS=.
• Uncomment these lines (remove the # symbol at the beginning).
• Enter the IP addresses of your desired DNS servers, separated by spaces.

Example:

27.50.20.21 (moratel)

8.8.8.8, 8.8.4.4 (google)

4. Save and Exit the File

• If you’re using nano:
  • Press Ctrl + O (to Write Out / Save).
  • Press Enter to confirm the filename.
  • Press Ctrl + X (to Exit).

5. Test ping to Domain From your terminal