I'd like to use Cloudflare's [1.1.1.1 and 1.0.0.1](https://1.1.1.1/) nameservers in Kubernetes, alongside [DNS over TLS](https://developers.cloudflare.com/1.1.1.1/dns-over-tls/). It [looks like](https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/) I can do it using [core-dns](https://github.com/coredns/coredns/issues/1650). I need to setup the following somehow:

* IPv4: `1.1.1.1` and `1.0.0.1`
* IPv6: `2606:4700:4700::1111` and `2606:4700:4700::1001`
* TLS Server Name: `tls.cloudflare-dns.com`

What should my `ConfigMap` look like? I've started it below:

```
apiVersion: v1
kind: ConfigMap
data:
  upstreamNameservers: |
    ["1.1.1.1", "1.0.0.1"]

```