squid프록시 서버

The requested URL could not be retrieved

While trying to retrieve the URL: http://www.192.168.100.55:8080/

The following error was encountered:

Unable to determine IP address from host name for www.192.168.100.55:8080/

The dnsserver returned:

Name Error: The domain name does not exist.

This means that:

The cache was not able to resolve the hostname presented in the URL.
Check if the address is correct.

Your cache administrator is root.
Generated Fri, 26 Mar 2010 07:57:02 GMT by 192.168.101.55 (squid/2.6.STABLE21)

이것 어떻게 해결해야 하나요?

참조자료 없나요?