In case your Pihole receives some, or all of it’s configuration from a DHCP server, it may inherit a setting called search domain. The search domain is intended to ease up local queries in your local subnet.
However, it may cause Pihole to add the search domain to queries.
For example:
www.example.org becomes www.example.org.fritz.box
Too fix this on Ubuntu 22.04 LTS and Ubuntu server 22.04 LTS for example, go to the directory /etc using a terminal. List the properties of the resolv.conf file using ls -halt | grep resolv.conf
You’ll see that the file is a symlink:
lrwxrwxrwx 1 root root 39 Mai 24 2023 resolv.conf
Use the mv command to change the file name:
mv resolv.conf resolv.conf.bak
List the properties of the resolv.conf file using: ls -halt | grep resolv.conf
lrwxrwxrwx 1 root root 39 Mai 24 2023 resolv.conf.bak -> ../run/systemd/resolve/stub-resolv.conf
Create a new file, for example using nano:
nano -l resolv.conf
Enter the address of your DNS server of choice into the new file. The server will be used by system applications.
nameserver fd00::2
Now you should restart the system, or restart the corresponding unit with one of these:
systemctl restart systemd-resolved.serviceinit 6reboot
