I'm using squid2.5STABLE4. And I'm using upper proxy server above squid server. Browser - squid - upper proxy - Web Server(Internet) When I fail to access, I get error messages in browser. In error message URL is described like below. NONE://10.72.43.56:8181http://nonexist-domain.com/ 10.72.43.56 is IP address of upper proxy server. 8181 is port number of upper proxy server. "http://nonexist-domain.com/" is URL I requested. I don't want to represent the part of "NONE://10.72.43.56:8181". I want to represent only "http://nonexist-domain.com/". How can I perform this? Please teach me.