terraform: Make IPv6 DNS entires optional

terraform/modules/hcloud_instance/main.tf

@@ -25,7 +25,7 @@ resource "cloudflare_record" "dns-a" {
 }
 
 resource "cloudflare_record" "dns-aaaa" {
-  count   = var.instance_count
+  count   = var.enable_IPv6 == true ? var.instance_count : 0
   zone_id = var.dns_zone_id
   name    = element(hcloud_server.server.*.name, count.index)
   value   = "${element(hcloud_server.server.*.ipv6_address, count.index)}1"
@@ -41,7 +41,7 @@ resource "hcloud_rdns" "dns-ptr-ipv4" {
 }
 
 resource "hcloud_rdns" "dns-ptr-ipv6" {
-  count      = var.instance_count
+  count      = var.enable_IPv6 == true ? var.instance_count : 0
   server_id  = element(hcloud_server.server.*.id, count.index)
   ip_address = "${element(hcloud_server.server.*.ipv6_address, count.index)}1"
   dns_ptr    = element(hcloud_server.server.*.name, count.index)

terraform/modules/hcloud_instance/variables.tf

@@ -94,3 +94,9 @@ variable "subnet" {
   description = "Id of the additional internal network"
   default     = null
 }
+
+variable "enable_IPv6" {
+  type        = bool
+  description = "Enable or disable setting up IPv6"
+  default     = true
+}