%CLIENTIP - IPv4 address of the client running curl
%CLIENT6IP - IPv6 address of the client running curl
%HOSTIP - IPv4 address of the host running this test
-%HOSTPORT - Port number of the HTTP server
+%HTTPPORT - Port number of the HTTP server
%HOST6IP - IPv6 address of the host running this test
-%HOST6PORT - IPv6 port number of the HTTP server
+%HTTP6PORT - IPv6 port number of the HTTP server
%HTTPSPORT - Port number of the HTTPS server
%FTPPORT - Port number of the FTP server
%FTP6PORT - IPv6 port number of the FTP server