Adguard uses incorrect names

[Mister-XY]

Prerequisites

• I have checked the Wiki and Discussions and found no answer

• I have searched other issues and found no duplicates

• I want to report a bug and not ask a question or ask for help

• I have set up AdGuard Home correctly and configured clients to use it. (Use the Discussions for help with installing and configuring clients.)

Platform (OS and CPU architecture)

Linux, ARMv7

Installation

Other (please mention in the description)

Setup

On one machine

AdGuard Home version

0.107.55

Action

Replace the following command with the one you're calling or a
description of the failing action:

 nslookup 192.168.178.19
19.178.168.192.in-addr.arpa     name = Thomas-Smartphone-Xiaomi.fritz.box.
19.178.168.192.in-addr.arpa     name = Xiaomi-11-Lite-5G-NE.fritz.box.

Expected result

I want see the correct Names how it set like Fritzbox Router

Actual result

I see the old names or what they were called before the Fritzbox was renamed.

Additional information and/or screenshots

For a long time now, I've noticed that all the clients in Adguard Home are named incorrectly. This means that they often get the name they had before they were renamed.
Of course, you could store all the names in /etc/host with the corresponding IP, but this solution is not very well thought out. If I change the IP in the router, then it also has to be changed manually in /etc/host. This means that you are basically always forced to do something else. This problem does not exist in Pihole.

[Dynamic5912]

Have you updated the DNS names for the devices on the router?

[Mister-XY]

Yes, I changed the names a long time ago. I didn't have Adguard on the PI back then.

[whyisthisbroken]

The rDNS Feature in AGH is broken since, i dont know...ever ?
I tried also with my and got no luck, so i added all names in the hosts file. (/etc/hosts)

Now it works.

[Mister-XY]

I think the names were correct 1-2 years ago and after an update from Adguard they were no longer correct and are displayed as they are now. I'm ruling out the /etc/host thing because the name changes when the IP changes.
Suppose I enter the name "Hummel" for 192.168.178.9
and for some reason I have to assign the IP 192.168.178.9 differently in the router, then the name for the IP is no longer correct.
That means I would have to remember to change the /etc/host as well.