Add PTR entries for IPv6

I'm not sure why we didn't have this right off the bat. Perhaps it wasn't supported earlier?

tf-stage1/archlinux.tf

@@ -18,12 +18,18 @@ provider "hcloud" {
   token = data.external.hetzner_cloud_api_key.result.hetzner_cloud_api_key
 }
 
-resource "hcloud_rdns" "quassel" {
+resource "hcloud_rdns" "quassel_ipv4" {
   server_id  = hcloud_server.quassel.id
   ip_address = hcloud_server.quassel.ipv4_address
   dns_ptr    = "quassel.archlinux.org"
 }
 
+resource "hcloud_rdns" "quassel_ipv6" {
+  server_id  = hcloud_server.quassel.id
+  ip_address = hcloud_server.quassel.ipv6_address
+  dns_ptr    = "quassel.archlinux.org"
+}
+
 resource "hcloud_server" "quassel" {
   name        = "quassel.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -33,12 +39,18 @@ resource "hcloud_server" "quassel" {
   }
 }
 
-resource "hcloud_rdns" "phrik" {
+resource "hcloud_rdns" "phrik_ipv4" {
   server_id  = hcloud_server.phrik.id
   ip_address = hcloud_server.phrik.ipv4_address
   dns_ptr    = "phrik.archlinux.org"
 }
 
+resource "hcloud_rdns" "phrik_ipv6" {
+  server_id  = hcloud_server.phrik.id
+  ip_address = hcloud_server.phrik.ipv6_address
+  dns_ptr    = "phrik.archlinux.org"
+}
+
 resource "hcloud_server" "phrik" {
   name        = "phrik.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -48,12 +60,18 @@ resource "hcloud_server" "phrik" {
   }
 }
 
-resource "hcloud_rdns" "bbs" {
+resource "hcloud_rdns" "bbs_ipv4" {
   server_id  = hcloud_server.bbs.id
   ip_address = hcloud_server.bbs.ipv4_address
   dns_ptr    = "bbs.archlinux.org"
 }
 
+resource "hcloud_rdns" "bbs_ipv6" {
+  server_id  = hcloud_server.bbs.id
+  ip_address = hcloud_server.bbs.ipv6_address
+  dns_ptr    = "bbs.archlinux.org"
+}
+
 resource "hcloud_server" "bbs" {
   name        = "bbs.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -63,12 +81,18 @@ resource "hcloud_server" "bbs" {
   }
 }
 
-resource "hcloud_rdns" "gitlab" {
+resource "hcloud_rdns" "gitlab_ipv4" {
   server_id  = hcloud_server.gitlab.id
   ip_address = hcloud_server.gitlab.ipv4_address
   dns_ptr    = "gitlab.archlinux.org"
 }
 
+resource "hcloud_rdns" "gitlab_ipv6" {
+  server_id  = hcloud_server.gitlab.id
+  ip_address = hcloud_server.gitlab.ipv6_address
+  dns_ptr    = "gitlab.archlinux.org"
+}
+
 resource "hcloud_server" "gitlab" {
   name        = "gitlab.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -78,12 +102,18 @@ resource "hcloud_server" "gitlab" {
   }
 }
 
-resource "hcloud_rdns" "matrix" {
+resource "hcloud_rdns" "matrix_ipv4" {
   server_id  = hcloud_server.matrix.id
   ip_address = hcloud_server.matrix.ipv4_address
   dns_ptr    = "matrix.archlinux.org"
 }
 
+resource "hcloud_rdns" "matrix_ipv6" {
+  server_id  = hcloud_server.matrix.id
+  ip_address = hcloud_server.matrix.ipv6_address
+  dns_ptr    = "matrix.archlinux.org"
+}
+
 resource "hcloud_server" "matrix" {
   name        = "matrix.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -93,12 +123,18 @@ resource "hcloud_server" "matrix" {
   }
 }
 
-resource "hcloud_rdns" "acccounts" {
+resource "hcloud_rdns" "acccounts_ipv4" {
   server_id  = hcloud_server.accounts.id
   ip_address = hcloud_server.accounts.ipv4_address
   dns_ptr    = "accounts.archlinux.org"
 }
 
+resource "hcloud_rdns" "acccounts_ipv6" {
+  server_id  = hcloud_server.accounts.id
+  ip_address = hcloud_server.accounts.ipv6_address
+  dns_ptr    = "accounts.archlinux.org"
+}
+
 resource "hcloud_server" "accounts" {
   name        = "accounts.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -118,12 +154,18 @@ resource "hcloud_volume" "mirror" {
   server_id = hcloud_server.mirror.id
 }
 
-resource "hcloud_rdns" "mirror" {
+resource "hcloud_rdns" "mirror_ipv4" {
   server_id  = hcloud_server.mirror.id
   ip_address = hcloud_server.mirror.ipv4_address
   dns_ptr    = "mirror.pkgbuild.com"
 }
 
+resource "hcloud_rdns" "mirror_ipv6" {
+  server_id  = hcloud_server.mirror.id
+  ip_address = hcloud_server.mirror.ipv6_address
+  dns_ptr    = "mirror.pkgbuild.com"
+}
+
 resource "hcloud_server" "mirror" {
   name        = "mirror.pkgbuild.com"
   image       = data.hcloud_image.archlinux.id
@@ -133,12 +175,18 @@ resource "hcloud_server" "mirror" {
   }
 }
 
-resource "hcloud_rdns" "homedir" {
+resource "hcloud_rdns" "homedir_ipv4" {
   server_id  = hcloud_server.homedir.id
   ip_address = hcloud_server.homedir.ipv4_address
   dns_ptr    = "homedir.archlinux.org"
 }
 
+resource "hcloud_rdns" "homedir_ipv6" {
+  server_id  = hcloud_server.homedir.id
+  ip_address = hcloud_server.homedir.ipv6_address
+  dns_ptr    = "homedir.archlinux.org"
+}
+
 resource "hcloud_server" "homedir" {
   name        = "homedir.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -154,12 +202,18 @@ resource "hcloud_volume" "homedir" {
   server_id = hcloud_server.homedir.id
 }
 
-resource "hcloud_rdns" "bugs" {
+resource "hcloud_rdns" "bugs_ipv4" {
   server_id  = hcloud_server.bugs.id
   ip_address = hcloud_server.bugs.ipv4_address
   dns_ptr    = "bugs.archlinux.org"
 }
 
+resource "hcloud_rdns" "bugs_ipv6" {
+  server_id  = hcloud_server.bugs.id
+  ip_address = hcloud_server.bugs.ipv6_address
+  dns_ptr    = "bugs.archlinux.org"
+}
+
 resource "hcloud_server" "bugs" {
   name        = "bugs.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -169,12 +223,18 @@ resource "hcloud_server" "bugs" {
   }
 }
 
-resource "hcloud_rdns" "aur" {
+resource "hcloud_rdns" "aur_ipv4" {
   server_id  = hcloud_server.aur.id
   ip_address = hcloud_server.aur.ipv4_address
   dns_ptr    = "aur.archlinux.org"
 }
 
+resource "hcloud_rdns" "aur_ipv6" {
+  server_id  = hcloud_server.aur.id
+  ip_address = hcloud_server.aur.ipv6_address
+  dns_ptr    = "aur.archlinux.org"
+}
+
 resource "hcloud_server" "aur" {
   name        = "aur.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -184,12 +244,18 @@ resource "hcloud_server" "aur" {
   }
 }
 
-resource "hcloud_rdns" "aur-dev" {
+resource "hcloud_rdns" "aur-dev_ipv4" {
   server_id  = hcloud_server.aur-dev.id
   ip_address = hcloud_server.aur-dev.ipv4_address
   dns_ptr    = "aur-dev.archlinux.org"
 }
 
+resource "hcloud_rdns" "aur-dev_ipv6" {
+  server_id  = hcloud_server.aur-dev.id
+  ip_address = hcloud_server.aur-dev.ipv6_address
+  dns_ptr    = "aur-dev.archlinux.org"
+}
+
 resource "hcloud_server" "aur-dev" {
   name        = "aur-dev.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -199,12 +265,18 @@ resource "hcloud_server" "aur-dev" {
   }
 }
 
-resource "hcloud_rdns" "mailman3" {
+resource "hcloud_rdns" "mailman3_ipv4" {
   server_id  = hcloud_server.mailman3.id
   ip_address = hcloud_server.mailman3.ipv4_address
   dns_ptr    = "mailman3.archlinux.org"
 }
 
+resource "hcloud_rdns" "mailman3_ipv6" {
+  server_id  = hcloud_server.mailman3.id
+  ip_address = hcloud_server.mailman3.ipv6_address
+  dns_ptr    = "mailman3.archlinux.org"
+}
+
 resource "hcloud_server" "mailman3" {
   name        = "mailman3.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -214,12 +286,18 @@ resource "hcloud_server" "mailman3" {
   }
 }
 
-resource "hcloud_rdns" "reproducible" {
+resource "hcloud_rdns" "reproducible_ipv4" {
   server_id  = hcloud_server.reproducible.id
   ip_address = hcloud_server.reproducible.ipv4_address
   dns_ptr    = "reproducible.archlinux.org"
 }
 
+resource "hcloud_rdns" "reproducible_ipv6" {
+  server_id  = hcloud_server.reproducible.id
+  ip_address = hcloud_server.reproducible.ipv6_address
+  dns_ptr    = "reproducible.archlinux.org"
+}
+
 resource "hcloud_server" "reproducible" {
   name        = "reproducible.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -229,12 +307,18 @@ resource "hcloud_server" "reproducible" {
   }
 }
 
-resource "hcloud_rdns" "monitoring" {
+resource "hcloud_rdns" "monitoring_ipv4" {
   server_id  = hcloud_server.monitoring.id
   ip_address = hcloud_server.monitoring.ipv4_address
   dns_ptr    = "monitoring.archlinux.org"
 }
 
+resource "hcloud_rdns" "monitoring_ipv6" {
+  server_id  = hcloud_server.monitoring.id
+  ip_address = hcloud_server.monitoring.ipv6_address
+  dns_ptr    = "monitoring.archlinux.org"
+}
+
 resource "hcloud_server" "monitoring" {
   name        = "monitoring.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -244,12 +328,18 @@ resource "hcloud_server" "monitoring" {
   }
 }
 
-resource "hcloud_rdns" "secure-runner2" {
+resource "hcloud_rdns" "secure-runner2_ipv4" {
   server_id  = hcloud_server.secure-runner2.id
   ip_address = hcloud_server.secure-runner2.ipv4_address
   dns_ptr    = "secure-runner2.archlinux.org"
 }
 
+resource "hcloud_rdns" "secure-runner2_ipv6" {
+  server_id  = hcloud_server.secure-runner2.id
+  ip_address = hcloud_server.secure-runner2.ipv6_address
+  dns_ptr    = "secure-runner2.archlinux.org"
+}
+
 resource "hcloud_server" "secure-runner2" {
   name        = "secure-runner2.archlinux.org"
   image       = data.hcloud_image.archlinux.id
@@ -268,12 +358,18 @@ resource "hcloud_server" "svn2gittest" {
   }
 }
 
-resource "hcloud_rdns" "mail" {
+resource "hcloud_rdns" "mail_ipv4" {
   server_id  = hcloud_server.mail.id
   ip_address = hcloud_server.mail.ipv4_address
   dns_ptr    = "mail.archlinux.org"
 }
 
+resource "hcloud_rdns" "mail_ipv6" {
+  server_id  = hcloud_server.mail.id
+  ip_address = hcloud_server.mail.ipv6_address
+  dns_ptr    = "mail.archlinux.org"
+}
+
 resource "hcloud_server" "mail" {
   name        = "mail.archlinux.org"
   image       = data.hcloud_image.archlinux.id