<p>It looks like the commit actually attempts both - ipv4 first, then if ipv6 is enabled do ipv6.  I think <a href="https://github.com/bogdan-iancu" class="user-mention">@bogdan-iancu</a> is right and the logic should be serial as follows:</p>

<p>if (ipv6_preferred==true){<br>
   do IPV6 lookup<br>
   if (no IPV6 result){<br>
     do IPV4 lookup<br>
   }<br>
} else {<br>
   do IPV4 lookup<br>
   if (no IPV4 result &amp;&amp; IPV6 enabled) {<br>
     do IPV6 lookup<br>
   }<br>
}</p>

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