-
termux-app
Termux - a terminal emulator application for Android OS extendible by variety of packages.
-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Ninja edit: Since you did ask for a source I went looking for one beyond the reckoning of myself being some random dude on the internet and found this bug report spanning from 2017 to current day.
Termux wont respect the DNS settings of the host. You need to set it for termux. If you want to test if your NVS is using pihole, use a browser and browse some website, check your pihole log to see if pihole recieves it. Or you could visit https://blockads.fivefilters.org/ for a quick confirm.