diff --git a/utils.inc.php b/utils.inc.php
index 28ea934..70747ca 100644
--- a/utils.inc.php
+++ b/utils.inc.php
@@ -2,7 +2,7 @@
 
 require 'vendor/autoload.php';
 
-function checkDNS($domain, $withWww = false)
+function checkDNS($domain, $withWww = false, $noip6 = false)
 {
     if (!preg_match('/(?=^.{4,253}$)(^((?!-)[a-zA-Z0-9-]{0,62}[a-zA-Z0-9]\.)+[a-zA-Z]{2,63}$)/', strtolower($domain))) {
         throw new Exception('not valid domain : "'.$domain.'".');
@@ -17,11 +17,13 @@ function checkDNS($domain, $withWww = false)
     if ($currentip[0]['ip'] !== $_SERVER['ip4']) {
         throw new Exception('the current ip v4 address of '.$domain.' is '.$currentip[0]['ip'].'. it should be '.$_SERVER['ip4']);
     }
-    if (empty($currentip[0]['ipv6'])) {
-        throw new Exception('the domain '.$domain.' has no ip v6 in DNS record.');
-    }
-    if ($currentip[1]['ipv6'] !== $_SERVER['ip6']) {
-        throw new Exception('the current ip v6 address of '.$domain.' is '.$currentip[1]['ipv6'].'. it should be '.$_SERVER['ip6']);
+    if (!$noip6) {
+        if (empty($currentip[0]['ipv6'])) {
+            throw new Exception('the domain '.$domain.' has no ip v6 in DNS record.');
+        }
+        if ($currentip[1]['ipv6'] !== $_SERVER['ip6']) {
+            throw new Exception('the current ip v6 address of '.$domain.' is '.$currentip[1]['ipv6'].'. it should be '.$_SERVER['ip6']);
+        }
     }
     if ($withWww) {
         $dnsentries = dns_get_record('www.'.$domain, DNS_A + DNS_AAAA + DNS_CNAME);
@@ -35,13 +37,18 @@ function checkDNS($domain, $withWww = false)
             if ($row['host'] == 'www.'.$domain && $row['type']=='A' && $row['ip'] == $_SERVER['ip4']) {
                 $foundIp4 = true;
             }
-            if ($row['host'] == 'www.'.$domain && $row['type']=='AAAA' && $row['ipv6'] == $_SERVER['ip6']) {
-                $foundIp6 = true;
+            if (!$noip6) {
+                if ($row['host'] == 'www.'.$domain && $row['type']=='AAAA' && $row['ipv6'] == $_SERVER['ip6']) {
+                    $foundIp6 = true;
+                }
             }
         }
         if (!$foundCnameEntry) {
-            if (!$foundIp4 && !$foundIp6) {
-                throw new Exception('the domain www.'.$domain.' was not found in DNS record as a CNAME targeting '.$domain."\n".' or A entry to '.$_SERVER['ip4'].' and a AAAA entry to '.$_SERVER['ip6'].'.');
+            if (!$foundIp4) {
+                throw new Exception('the domain www.'.$domain.' was not found in DNS record as a CNAME targeting '.$domain."\n".' or A entry to '.$_SERVER['ip4']);
+            }
+            if (!$noip6 && !$foundIp6) {
+                throw new Exception('the domain www.'.$domain.' was not found in DNS record as a CNAME targeting '.$domain."\n".' or AAAA entry to '.$_SERVER['ip6'].'.');
             }
         }
     }
diff --git a/yeswiki-installer.php b/yeswiki-installer.php
index a34fc69..b42367b 100755
--- a/yeswiki-installer.php
+++ b/yeswiki-installer.php
@@ -62,6 +62,12 @@ if (0 == posix_getuid()) {
             'description'  => 'No SSL certificate and no DNS check',
             'noValue'      => true,
         ],
+        'noip6' => [
+            'prefix'       => 'noip6',
+            'longPrefix'   => 'no-ip-v6',
+            'description'  => 'No ip v6 DNS check',
+            'noValue'      => true,
+        ],
     ]);
     $climate->arguments->parse();
     $domain = $climate->arguments->get('domain');
@@ -71,11 +77,12 @@ if (0 == posix_getuid()) {
             $type = $climate->arguments->get('type');
             $confirm = $climate->arguments->get('confirm');
             $nossl = $climate->arguments->get('nossl');
+            $noip6 = $climate->arguments->get('noip6');
             $herseUser = $climate->arguments->get('herseuser');
             $hersePass = $climate->arguments->get('hersepass');
             $isFullDomain = !preg_match('/.'.$_SERVER['maindomain'].'$/isU', $domain, $matches, PREG_OFFSET_CAPTURE, 0);
             if (!$nossl) {
-                checkDNS($domain, $isFullDomain);
+                checkDNS($domain, $isFullDomain, $noip6);
             }
             checkIfInstalled($domain);
             $needHerse = checkHerse($herseUser, $hersePass);