diff --git a/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns.inc b/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns.inc
index 09ad91469..476cc286d 100644
--- a/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns.inc
+++ b/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns.inc
@@ -151,6 +151,7 @@ function dyndns_list()
         'route53-v6' => 'Route 53 (v6)',
         'selfhost' => 'SelfHost',
         'strato' => 'STRATO',
+        'strato-v6' => 'STRATO (v6)',
         'zoneedit' => 'ZoneEdit',
     );
 }
diff --git a/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc b/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
index 6eb12fe70..aeef52eef 100644
--- a/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
+++ b/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
@@ -50,7 +50,8 @@
  *  No-IP                       - Last Tested: 15 May 2020
  *  ODS                         - Last Tested: 02 August 2005
  *  Oray                        - Last Tested: 26 May 2017
- *  STRATO                      - Last Tested: 09 May 2017
+ *  STRATO                      - Last Tested: 08 October 2021
+ *  STRATO V6                   - Last Tested: 08 October 2021
  *  SelfHost                    - Last Tested: 26 December 2011
  *  StaticCling                 - Last Tested: 27 April 2006
  *  deSEC                       - Last Tested: 09 September 2020
@@ -260,6 +261,7 @@ class updatedns
             case 'desec-v4-v6':
             case 'desec-v6':
             case 'hetzner-v6':
+            case 'strato-v6':
                 $this->_useIPv6 = true;
                 break;
             default:
@@ -358,6 +360,7 @@ class updatedns
                 case 'selfhost':
                 case 'staticcling':
                 case 'strato':
+                case 'strato-v6':
                 case 'zoneedit':
                     $this->_update();
                     if ($this->_dnsDummyUpdateDone == true) {
@@ -1019,11 +1022,14 @@ class updatedns
                 curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
                 break;
             case 'strato':
+            case 'strato-v6':
                 $server = "https://dyndns.strato.com/nic/update?hostname={$this->_dnsHost}&myip={$this->_dnsIP}";
                 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
                 curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser . ':' . $this->_dnsPass);
                 curl_setopt($ch, CURLOPT_URL, $server);
-                curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
+                if ($this->_curlIpresolveV4) {
+                    curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
+                }
                 break;
             case '3322':
                 $server = "http://members.3322.net/dyndns/update?hostname={$this->_dnsHost}&myip={$this->_dnsIP}";
@@ -1651,6 +1657,7 @@ class updatedns
             case 'ovh-dynhost':
             case 'selfhost':
             case 'strato':
+            case 'strato-v6':
                 if (preg_match('/notfqdn/i', $data)) {
                     $status = "Dynamic DNS: (Error) Not a FQDN";
                 } elseif (preg_match('/nochg/i', $data)) {