Resolved is a local, caching, DNS nameserver resolver and is used by default on Ubuntu. This talk's goals is to de-mystify how it works and what it does by default on Ubuntu, and how one can further configure it to either not get in the way, or do even more cool things. We will discuss how it can be used (nss, dbus, over the network, command-line, text-configs) and how to configure it (config files, command line, resolvconf, dbus, networkd, network-manager). We will cover advanced use cases for per-interface nameservers, true split-dns configuration, and optional features such as DNSSEC MDNS Zeroconf. Last we will discuss bugs, DNS violations and diss captive portals.