diff --git a/terraform/docker-server.tf b/terraform/docker-server.tf
index 41d9c30..b184973 100644
--- a/terraform/docker-server.tf
+++ b/terraform/docker-server.tf
@@ -16,8 +16,14 @@ resource "hcloud_server" "server-4-docker-keks-cloud" {
   user_data = file("cloud-init/hetzner-cloud.yml")
 }
 
-resource "hcloud_rdns" "master" {
+resource "hcloud_rdns" "server-4-docker-keks-cloud-reserver-4" {
   server_id  = hcloud_server.server-4-docker-keks-cloud.id
   ip_address = hcloud_server.server-4-docker-keks-cloud.ipv4_address
   dns_ptr    = hcloud_server.server-4-docker-keks-cloud.name
 }
+
+resource "hcloud_rdns" "server-4-docker-keks-cloud-reserver-6" {
+  server_id  = hcloud_server.server-4-docker-keks-cloud.id
+  ip_address = hcloud_server.server-4-docker-keks-cloud.ipv6_address
+  dns_ptr    = hcloud_server.server-4-docker-keks-cloud.name
+}