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<p>To disable IPv6 in OS X Lion, you will need to use the Terminal.</p>
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<li>Applications >; Utilities >; Terminal</li>
<li>To determine what are all of your Mac&#8217;s network interfaces are, issue the following command: <span style="color: red;"><i>networksetup -listallnetworkservices</i></span></li>
<li>To disable IPv6 for wireless, issue the following command: <i> ;</i></li>
<li><span style="color: red;"><i>networksetup -setv6off Wi-Fi</i> </span></li>
<li>to disable IPv6 for Ethernet, issue the following command:</li>
<li> ;<span style="color: red;"><i>networksetup -setv6off Ethernet</i></span></li>
<li>To re-enable IPv6, use <i>-setv6automatic</i> instead</li>
</ul>
<p>To Disable IPv6 on windows click here <a href="http://bzia.blogspot.co.uk/2014/03/disabling-ipv6-on-serversworkstations.html" target="_blank">Disabling-ipv6-on-Windows</a></p>
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