오류: 'testphp.vulnweb.com' 호스트가 sqlmap kali linux에 존재하지 않습니까?

저는 ubuntu 14.04 lts의 virtualbox에서 kali linux를 실행하고 있습니다. root@kali:~# sqlmap -u http://testphp.vulnweb.com/listproducts.php?cat=1 --dbssqlmap에서 실행하는 동안 다음 오류가 발생합니다. 도와주세요.

root@kali:~# sqlmap -u http://testphp.vulnweb.com/listproducts.php?cat=1 --dbs
         _
 ___ ___| |_____ ___ ___  {1.0-dev-nongit-20150914}
|_ -| . | |     | .'| . |
|___|_  |_|_|_|_|__,|  _|
      |_|           |_|   http://sqlmap.org

[!] legal disclaimer: Usage of sqlmap for attacking targets without prior mutual consent is illegal. It is the end user's responsibility to obey all applicable local, state and federal laws. Developers assume no liability and are not responsible for any misuse or damage caused by this program

[*] starting at 23:19:09

[23:19:11] [WARNING] using '/root/.sqlmap/output' as the output directory
[23:19:11] [CRITICAL] host 'testphp.vulnweb.com' does not exist

[*] shutting down at 23:19:11