mDNS does work out of the box mostly with systemd-resolve (and the right firewall rules if you only allow certain inbound traffic). You can add something like

mDNS does work out of the box mostly with systemd-resolve (and the right firewall rules if you only allow certain inbound traffic). You can add something like avahi and have Linux do more interesting things like reflection between interfaces/networks--critical for segregating your Chromecasts and other IoT devices.