I had also the same issue. I found a hack to disable the PTR DNS lookups.
I installed this addon in HA.
https://github.com/tronikos/default_config_disabler
Then from the configuration of the addon, I just disabled the dhcp
This stopped all the PTR DNS lookups.
- Core 2024.8.1
- Supervisor 2024.08.0
- Operating System 12.4