Add support for floating IPv6 addresses for Control Plane nodes

floating_ip.tf

@@ -5,6 +5,12 @@ locals {
       var.control_plane_public_vip_ipv4_enabled
     )
   )
+  control_plane_public_vip_ipv6_enabled = (
+    local.network_public_ipv6_enabled && (
+      var.control_plane_public_vip_ipv6_id != null ||
+      var.control_plane_public_vip_ipv6_enabled
+    )
+  )
 }
 
 resource "hcloud_floating_ip" "control_plane_ipv4" {
@@ -13,7 +19,22 @@ resource "hcloud_floating_ip" "control_plane_ipv4" {
   name              = "${var.cluster_name}-control-plane-ipv4"
   type              = "ipv4"
   home_location     = hcloud_server.control_plane[local.talos_primary_node_name].location
-  description       = "Control Plane Public VIP"
+  description       = "Control Plane Public VIPv4"
+  delete_protection = var.cluster_delete_protection
+
+  labels = {
+    cluster = var.cluster_name,
+    role    = "control-plane"
+  }
+}
+
+resource "hcloud_floating_ip" "control_plane_ipv6" {
+  count = local.control_plane_public_vip_ipv6_enabled && var.control_plane_public_vip_ipv6_id == null ? 1 : 0
+
+  name              = "${var.cluster_name}-control-plane-ipv6"
+  type              = "ipv6"
+  home_location     = hcloud_server.control_plane[local.talos_primary_node_name].location
+  description       = "Control Plane Public VIPv6"
   delete_protection = var.cluster_delete_protection
 
   labels = {
@@ -30,3 +51,12 @@ data "hcloud_floating_ip" "control_plane_ipv4" {
     local.control_plane_public_vip_ipv4_enabled ? try(hcloud_floating_ip.control_plane_ipv4[0].id, null) : null
   )
 }
+
+data "hcloud_floating_ip" "control_plane_ipv6" {
+  count = local.control_plane_public_vip_ipv6_enabled ? 1 : 0
+
+  id = coalesce(
+    can(var.control_plane_public_vip_ipv6_id) ? var.control_plane_public_vip_ipv6_id : null,
+    local.control_plane_public_vip_ipv6_enabled ? try(hcloud_floating_ip.control_plane_ipv6[0].id, null) : null
+  )
+}

talos_config.tf

@@ -170,7 +170,7 @@ locals {
               dhcp      = true
               dhcpOptions = {
                 ipv4 = var.talos_public_ipv4_enabled
-                ipv6 = false
+                ipv6 = var.talos_public_ipv6_enabled
               }
               vip = local.control_plane_public_vip_ipv4_enabled ? {
                 ip = local.control_plane_public_vip_ipv4

variables.tf

@@ -230,19 +230,31 @@ variable "firewall_talos_api_source" {
 variable "control_plane_public_vip_ipv4_enabled" {
   type        = bool
   default     = false
-  description = "If true, a floating IP will be created and assigned to the Control Plane nodes."
+  description = "If true, a floating IPv4 will be created and assigned to the Control Plane nodes."
+}
+
+variable "control_plane_private_vip_ipv4_enabled" {
+  type        = bool
+  default     = true
+  description = "If true, an alias IPv4 will be created and assigned to the Control Plane nodes."
 }
 
 variable "control_plane_public_vip_ipv4_id" {
   type        = number
   default     = null
-  description = "Specifies the Floating IP ID for the Control Plane nodes. A new floating IP will be created if this is set to null."
+  description = "Specifies the Floating IPv4 ID for the Control Plane nodes. A new floating IPv4 will be created if this is set to null."
 }
 
-variable "control_plane_private_vip_ipv4_enabled" {
+variable "control_plane_public_vip_ipv6_enabled" {
   type        = bool
-  default     = true
-  description = "If true, an alias IP will be created and assigned to the Control Plane nodes."
+  default     = false
+  description = "If true, a floating IPv6 will be created and assigned to the Control Plane nodes."
+}
+
+variable "control_plane_public_vip_ipv6_id" {
+  type        = number
+  default     = null
+  description = "Specifies the Floating IPv6 ID for the Control Plane nodes. A new floating IPv6 will be created if this is set to null."
 }
 
 variable "kube_api_admission_control" {