diff --git a/terraform/modules/k8s-cluster/manager-node.tf b/terraform/modules/k8s-cluster/manager-node.tf
index 12f24fe..b465f32 100644
--- a/terraform/modules/k8s-cluster/manager-node.tf
+++ b/terraform/modules/k8s-cluster/manager-node.tf
@@ -23,7 +23,7 @@ resource "hcloud_rdns" "ipv4_manager" {
 
   primary_ip_id = hcloud_primary_ip.ipv4_manager_address[count.index].id
   ip_address    = hcloud_primary_ip.ipv4_manager_address[count.index].ip_address
-  dns_ptr       = inwx_nameserver_record.manager_aaaa.name
+  dns_ptr       = inwx_nameserver_record.manager_aaaa[count.index].name
 }
 
 resource "hcloud_primary_ip" "ipv6_manager_address" {
@@ -41,7 +41,7 @@ resource "hcloud_rdns" "ipv6_manager" {
 
   primary_ip_id = hcloud_primary_ip.ipv6_manager_address[count.index].id
   ip_address    = hcloud_primary_ip.ipv6_manager_address[count.index].ip_address
-  dns_ptr       = inwx_nameserver_record.manager_aaaa.name
+  dns_ptr       = inwx_nameserver_record.manager_aaaa[count.index].name
 }
 
 resource "hcloud_server_network" "manager_private" {
diff --git a/terraform/modules/k8s-cluster/worker-node.tf b/terraform/modules/k8s-cluster/worker-node.tf
index afd336c..e6a3cec 100644
--- a/terraform/modules/k8s-cluster/worker-node.tf
+++ b/terraform/modules/k8s-cluster/worker-node.tf
@@ -23,7 +23,7 @@ resource "hcloud_rdns" "ipv6_worker" {
 
   primary_ip_id = hcloud_primary_ip.ipv6_worker_address[count.index].id
   ip_address    = hcloud_primary_ip.ipv6_worker_address[count.index].ip_address
-  dns_ptr       = inwx_nameserver_record.worker_aaaa.name
+  dns_ptr       = inwx_nameserver_record.worker_aaaa[count.index].name
 }
 
 resource "hcloud_server_network" "worker_private" {