diff --git a/README.md b/README.md
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@@ -183,7 +183,7 @@ You need to install nginx (or apache2, or traefik, whichever you are more comfor
 
 ## Create a certificate for our deployments
 
-While you are at it you might as well create a DNS `A` fields to point at OpenWRT (which will forward it to nginx).
+While you are at it you might as well create a DNS `A` fields to point at OpenWRT (which will forward it to nginx). To do this use Gandi and one of the domains you probably already have from other labs.
 
 We need to use a certificate to secure HTTPS communication, the Matrix protocols require it. This can be done manually for the moment and automated later, as it is not super straightforward. I refer you to the [documentation on certbot + nginx](https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-20-04) I would recommend that you create a `matrix.<yourdomain>` certificate, then back them up somewhere safe as Letsencrypt has pretty aggressive rate limiting with regard to certificate creations.