diff --git a/content/admin/configuration/configuring-network-settings/enabling-subdomain-isolation.md b/content/admin/configuration/configuring-network-settings/enabling-subdomain-isolation.md
index 21b53b2b2a..d8a36f5d3b 100644
--- a/content/admin/configuration/configuring-network-settings/enabling-subdomain-isolation.md
+++ b/content/admin/configuration/configuring-network-settings/enabling-subdomain-isolation.md
@@ -35,7 +35,7 @@ When subdomain isolation is enabled, {% data variables.product.prodname_ghe_serv
 | `http(s)://HOSTNAME/render/`      | `http(s)://render.HOSTNAME/`      |
 | `http(s)://HOSTNAME/reply/`       | `http(s)://reply.HOSTNAME/`       |
 | `http(s)://HOSTNAME/uploads/`     | `http(s)://uploads.HOSTNAME/`     | {% ifversion ghes %}
-| `https://HOSTNAME/_registry/docker/` | `http(s)://docker.HOSTNAME/`{% endif %}{% ifversion ghes %}
+| `https://HOSTNAME/` | `http(s)://docker.HOSTNAME/`{% endif %}{% ifversion ghes %}
 | `https://HOSTNAME/_registry/npm/` | `https://npm.HOSTNAME/`
 | `https://HOSTNAME/_registry/rubygems/` | `https://rubygems.HOSTNAME/`
 | `https://HOSTNAME/_registry/maven/` | `https://maven.HOSTNAME/`
diff --git a/content/admin/packages/getting-started-with-github-packages-for-your-enterprise.md b/content/admin/packages/getting-started-with-github-packages-for-your-enterprise.md
index 82600b15c7..86480eb524 100644
--- a/content/admin/packages/getting-started-with-github-packages-for-your-enterprise.md
+++ b/content/admin/packages/getting-started-with-github-packages-for-your-enterprise.md
@@ -44,3 +44,9 @@ Choose which package ecosystems you'd like to enable, disable, or set to read-on
 If subdomain isolation is enabled for {% data variables.product.product_location %}, you will need to create and upload a TLS certificate that allows the package host URL for each ecosystem you want to use, such as `{% data reusables.package_registry.container-registry-hostname %}`. Make sure each package host URL includes `https://`.
 
   You can create the certificate manually, or you can use _Let's Encrypt_. If you already use _Let's Encrypt_, you must request a new TLS certificate after enabling {% data variables.product.prodname_registry %}. For more information about package host URLs, see "[Enabling subdomain isolation](/enterprise/admin/configuration/enabling-subdomain-isolation)." For more information about uploading TLS certificates to {% data variables.product.product_name %}, see "[Configuring TLS](/enterprise/admin/configuration/configuring-tls)."
+
+## Step 5: Check for and rename reserved names
+
+If you want to use the Docker ecosystem with subdomain isolation disabled, you **must** first rename any user or organization named `v2` on {% data variables.product.product_location %}, prior to enabling Docker ecosystem support in the {% data variables.enterprise.management_console %}. Docker uses a `v2` account name to manage path conflicts with the Docker API, and once Docker registry support is enabled, you won't be able to use this name anymore.
+
+You can view a full list of logins reserved for internal use by navigating to the "Reserved logins" page in the Site admin dashboard. For more information, see "[Reserved logins](/admin/configuration/configuring-your-enterprise/site-admin-dashboard#reserved-logins)."
diff --git a/content/packages/learn-github-packages/introduction-to-github-packages.md b/content/packages/learn-github-packages/introduction-to-github-packages.md
index f4716e5ca3..85a6cae85d 100644
--- a/content/packages/learn-github-packages/introduction-to-github-packages.md
+++ b/content/packages/learn-github-packages/introduction-to-github-packages.md
@@ -75,12 +75,10 @@ For more information, see "[About permissions for {% data variables.product.prod
 {% ifversion ghes %}
 {% note %}
 
-**Note:** Docker is not supported when subdomain isolation is disabled.
+**Note:** When enabling the Docker registry, we highly recommend also enabling subdomain isolation. For more information, see "[Enabling subdomain isolation](/admin/configuration/configuring-network-settings/enabling-subdomain-isolation)."
 
 {% endnote %}
 
-For more information about subdomain isolation, see "[Enabling subdomain isolation](/enterprise/admin/configuration/enabling-subdomain-isolation)."
-
 {% endif %}
 
 For more information about configuring your package client for use with {% data variables.product.prodname_registry %}, see "[Working with a {% data variables.product.prodname_registry %} registry](/packages/working-with-a-github-packages-registry)."