Bad arpa requests

### Prerequisites

- [X] I have checked the [Wiki](https://github.com/AdguardTeam/AdGuardHome/wiki) and [Discussions](https://github.com/AdguardTeam/AdGuardHome/discussions/categories/q-a) and found no answer

- [X] I have searched other issues and found no duplicates

- [X] I want to report a bug and not [ask a question or ask for help](https://github.com/AdguardTeam/AdGuardHome/discussions/categories/q-a)

- [X] I have set up AdGuard Home correctly and [configured clients to use it](https://github.com/AdguardTeam/AdGuardHome/wiki/Clients). (Use the [Discussions](https://github.com/AdguardTeam/AdGuardHome/discussions/categories/q-a) for help with installing and configuring clients.)

### Platform (OS and CPU architecture)

Linux, ARMv7

### Installation

Other (please mention in the description)

### Setup

On a router, DHCP is handled by the router

### AdGuard Home version

v0.107.34

### Action

Looks like AdGuardHome is making bad arpa requests, see screen shot. Client is Asus router in the screen shot,

### Expected result

Don't expect to see so many bad arpa requests

### Actual result

Don't expect to see so many bad arpa requests

### Additional information and/or screenshots