Hey guys,
i have a Raspberry Pi 4 running as Pihole, PiVPN on bare metal and HA running in Docker. HomeAssistants single use is to provide a browsable remote control for my Logitech Harmony Hub, this is the only integration i have running.
In my Pihole im seeing a huge surge of 1k+ PTR requests every hour (until the FTL shuts it down after 60 seconds) coming from 172.17.0.2, thats the IP of my HomeAssistant in Docker.
The HA seems to try to scan the whole Network every hour, the requests start at 172.17.0.1 and go on 172.17.x.x + n (from bottom to top) it looks like this:
2021-05-01 00:46:51 PTR10.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR9.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR8.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR7.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR6.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR5.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR4.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR3.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR2.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
2021-05-01 00:46:51 PTR1.0.17.172.in-addr.arpa172.17.0.2OK (cached)N/A (0.0ms)
it goes on to around 172.17.3.x until it gets shutdown by the Pihole.
Does anyone know what this is? It seems to be some kind of whole-network-scan(-attempt).
How can i manage this/tell HA what its looking for or stop this behaviour? Its clogging up the logs pretty badly and seems completely unnecessary.
thanks 