diff --git a/etc/inc/dyndns.class b/etc/inc/dyndns.class
index 430dd885f4..b343387520 100644
--- a/etc/inc/dyndns.class
+++ b/etc/inc/dyndns.class
@@ -1398,7 +1398,9 @@
 				curl_setopt($ip_ch, CURLOPT_INTERFACE, $ip_address);
 				curl_setopt($ip_ch, CURLOPT_CONNECTTIMEOUT, '30');
 				curl_setopt($ip_ch, CURLOPT_TIMEOUT, 120);
-				curl_setopt($ip_ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
+				if ($this->_useIPv6 == false) {
+					curl_setopt($ip_ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
+				};
 				$ip_result_page = curl_exec($ip_ch);
 				curl_close($ip_ch);
 				$ip_result_decoded = urldecode($ip_result_page);