# stubby

Published articles for stubby.

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## docker-stafwag-unbound v2.1.0 released: Use unbound as an DNS-over-TLS resolver and authoritative DNS server

DevFeed: [docker-stafwag-unbound v2.1.0 released: Use unbound as an DNS-over-TLS resolver and authoritative DNS server](<https://devfeed.tech/articles/docker-stafwag-unbound-v2-1-0-released-use-unbound-as-an-dns-over-tls-resolver-and-authoritative-dns-server-39532.md>)

Original publisher: [Read original article](<https://blog.wagemakers.be/blog/2025/05/04/use-unbound-as-dns-over-tls-and-authoritative-dns-server_v2.1.0/>)

Author: Staf Wagemakers

Published: 2025-05-04T15:01:01Z

Content type: release

Language: en

Sources: [stafwag Blog](<https://devfeed.tech/sources/stafwag-blog.md>)

Topics: [Docker](<https://devfeed.tech/topics/docker.md>), [Debian](<https://devfeed.tech/topics/debian.md>), [gnu linux](<https://devfeed.tech/topics/gnu-linux.md>)

Tags: [container](<https://devfeed.tech/tags/container.md>), [debian](<https://devfeed.tech/tags/debian.md>), [dns](<https://devfeed.tech/tags/dns.md>), [docker](<https://devfeed.tech/tags/docker.md>), [linux](<https://devfeed.tech/tags/linux.md>), [resolver](<https://devfeed.tech/tags/resolver.md>), [stubby](<https://devfeed.tech/tags/stubby.md>), [unbound](<https://devfeed.tech/tags/unbound.md>), [version](<https://devfeed.tech/tags/version.md>)

### AI overview

This release updates the docker-stafwag-unbound container to version 2.1.0. The update moves the base image to Debian Bookworm, generates a default certificate with unbound-control-setup, and updates the documentation. The article also explains using Unbound as an authoritative DNS server and for DNS-over-TLS.

### Source excerpt

Unbound is a popular DNS resolver, that has native DNS-over-TLS support. Unbound and Stubby were among the first resolvers to implement DNS-over-TLS. I wrote a few blog posts on how to use Stubby on GNU/Linux and FreeBSD. https://blog.wagemakers.be/blog/2018/09/09/dns-privacy-with-stubby-part1-gnulinux/ https://blog.wagemakers.be/blog/2018/10/07/dns-privacy-with-stubby-part-2-freebsd/ The implementation status of DNS-over-TLS and other DNS privacy options is available at: https://dnsprivacy.org/. See https://dnsprivacy.org/implementation_status/ for more details. It's less known that it can also be used as authoritative DNS server (aka a real DNS server). Since I discovered this feature and Unbound got native DNS-over-TLS support I started to it as my DNS server. I created a docker container for it a couple of years back to use it as an authoritative DNS server. I recently updated the container, the latest version (2.1.0) is available at: https://github.com/stafwag/docker-stafwag-unbound ChangeLog Version 2.1.0 Upgrade to debian:bookworm Updated BASE_IMAGE to debian:bookworm Add ARG DEBIAN_FRONTEND=noninteractive Run unbound-control-setup to generate the default certificate Documentation updated