Problems with updating the rDNS clients.

[Colossus5000]

Thank you very much for your excellent software. I've been using it for a while now.

I'm unfortunately having a small problem updating the rDNS clients.

My Fritzbox router with IP address 192.168.1.1 was registered under Private Reverse DNS Servers.

192.168.1.1
[/1.1.168.192.in-addr.arpa/]192.168.1.1

The rDNS requests are working as expected. The only problem is that after a complete system restart of the AdGuard Home server, the clients are only displayed with their IP addresses and not under their domain names. Only after a manual restart of the AdGuard Home service (sudo systemctl restart adguardhome) are the clients displayed correctly again.

At what intervals are the rDNS requests sent by AdGuard Home?

Thank you very much for your help.