IPv6 address results in "Error: Target is not valid"

When attempting to get information for an IPv6 address I get error:

Error: Target 2804:3c70:295:4a00:3c55:7e6e:a42:c71a is not valid


IPv4 works fine.



Code:

```
$client = new ArrayAccess\RdapClient\Client();
$request = $client->request($ip);
$response = $request->getResponse();
```