Host spamming in-addr.arpa and other URLs

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1

Expected Behaviour:

pi.hole shouldn't be making thousands of requests.
Other services running on host:

  • In a Docker container
    • Portainer
    • Nginx Proxy Manager
    • Vaultwarden
    • Uptime Kuma
    • Heimdall
    • Librespeed
    • Openspeedtest
  • Outside a Docker container
    • Cloudflare Tunnel
    • PM2
    • Tailscale

Hardware: RPI 4B, 8GB RAM, SSD storage. Wired via GbE to a switch, connected to a router (Edgerouter X, which is also running a DNS service, but all clients are set to my Pi-Hole's IP instead).

Actual Behaviour:

The host is spamming requests to:

  • [something].in-addr.arpa
  • root.keymetrics.io (most likely is related to PM2)
  • raw.githubusercontent.com

image
image

Debug Token:

https://tricorder.pi-hole.net/MfJsq7hI/

2

It seems like disabling PM2 Plus (the cloud dashboard) helped with root.keymetrics.io and disabling DNS monitor checking on Uptime Kuma helped with *.in-addr.arpa.
I will keep this updated if anything were to change in the following days.

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