Description:
------------
php with ipv6 support tris to get ipv6 ready even if it?s not needed.
I noticed this while updating the kernel to enable ipv6. I haven't done a restart yet, so there is the ipv6 module for the new kernel and the old kernel without ipv6 still running, php does something which causes the system to try to load the module (failing, as expected since it?s the wrong version)
There should just be an additional check whether php realy needs ipv6 for the url or not. (the target url has no AAAA entry and no ipv6 so far)

Reproduce code:
---------------
---
From manual page: function.file-get-contents
---
<?
echo file_get_contents("http://somewhere.internet.tld/file");
?>


Expected result:
----------------
content of url

Actual result:
--------------
content of url (with ipv6-failure message in system-log)