IPv6 support would be great (take a look at what <a href="http:&#x2F;&#x2F;icanhazip.com" rel="nofollow">http:&#x2F;&#x2F;icanhazip.com</a> does: <a href="http:&#x2F;&#x2F;ipv4.icanhazip.com" rel="nofollow">http:&#x2F;&#x2F;ipv4.icanhazip.com</a> and <a href="http:&#x2F;&#x2F;ipv6.icanhazip.com" rel="nofollow">http:&#x2F;&#x2F;ipv6.icanhazip.com</a>)<p>Anyway, sounds really cool :)