TL;DR: it's a Rust binary called Singularity (because of the gravity lists, domain blackholing? it sounds cool don't judge). You give it sources for malicious domains and it outputs a Lua script that the PowerDNS Recursor uses to automatically respond with a null route (0.0.0.0) to

I used to like VyOS quite a lot as a general-purpose lightweight Linux-based easily virtualised router appliance. It didn't really have anything to complain about, other than the fact that the latest build for its version 1.1.8 was released late-2017. Starting October 2018 it's getting too old. Components