Pi-hole's host machine can't resolve local domains

Unfortunately the solution with 127.0.0.1 only works if I ping or nslookup the router:

pi@raspberrypi4:~ $ nslookup fritz.box
Server:         127.0.0.1
Address:        127.0.0.1#53

Name:   fritz.box
Address: 192.168.178.1
Name:   fritz.box
Address: fd00::9a9b:cbff:feb6:5d61
Name:   fritz.box
Address: 2a04:xxxx:xxxx:xxxx:xxxx:cbff:feb6:5d61

Whenever I ping/nslookup anything else, I get this:

pi@raspberrypi4:~ $ nslookup Philips-Hue-Br2
Server:         127.0.0.1
Address:        127.0.0.1#53

Non-authoritative answer:
*** Can't find Philips-Hue-Br2: No answer

This is how it is in /etc/dhcpd.conf:

interface eth0
        static ip_address=192.168.178.5/24
        static routers=192.168.178.1
        static domain_name_servers=127.0.0.1

If correctly installed, 127.0.0.1 should also work:

Yep... if... but since I did a fresh install, just Raspberry Pi OS and Pi-hole I do not understand why it just doesn't work out of the box. :frowning: