German ist überhaupt kein Problem.
As for your issue:
Your Pi-hole is the only DNS server in your network that knows how to resolve pi.hole
, but it isn't queried in your case, as your router is distributing itself as DNS server:
*** [ DIAGNOSING ]: Discovering active DHCP servers (takes 10 seconds)
Scanning all your interfaces for DHCP servers
* Received 548 bytes from eth0:192.168.178.1
Offered IP address: 192.168.178.33
DHCP options:
Message type: DHCPOFFER (2)
router: 192.168.178.1
dns-server: 192.168.178.1
As your router does not know pi.hole
, a client will also consider resolution by appending the local search domain, which FritzBox routers set to fritz.box
.
As your router does neither know pi.hole.fritz.box
, it has forwarded the requests to a public upstream DNS server, and that public DNS server has supplied the answers:
$ nslookup pi.hole.fritz.box 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: pi.hole.fritz.box
Address: 54.39.222.96
Name: pi.hole.fritz.box
Address: 2607:5300:60:408a::96
Until recently, that would have resulted in NXDOMAIN
, but someone acquired the fritz.box
domain in January 2024, see Verwirrend: Internet-Domain fritz.box zeigt NFT-Galerie statt Router-Verwaltung | heise online.
That domain is now disputed, probably FritzBox manufacturer AVM, with that illegitimate fritz.box
's web server being taken down - but it seems that its corresponding authoritative DNS server is still active, delivering those false results.
As the webserver is down, this cannot be currently misused by that fritz.box website mimicking Pi-hole's UI, but its web server would still receive your HTTP request.
To address this, you need to configure your router to Make your network take advantage of Pi-hole.
FritzBox routers do support distributing Pi-hole as local DNS server, so you should configure yours to do so, see e.g. Pi-hole als DNS Server via DHCP an Clients verteilen (LAN Seite).
Once your Pi-hole is receiving DNS requests as local resolver, it will provide your local IP addresses.