nginx 0.6.6 *) Feature: the --sysconfdir=PATH option in configure. *) Feature: named locations. *) Feature: the $args variable can be set with the "set" directive. *) Feature: the $is_args variable. *) Bugfix: fair big weight upstream balancer. *) Bugfix: if a client has closed connection to mail proxy then nginx might not close connection to backend. *) Bugfix: if the same host without specified port was used as backend for HTTP and HTTPS, then nginx used only one port - 80 or 443. *) Bugfix: fix building on Solaris/amd64 by Sun Studio 11 and early versions; bug appeared in 0.6.4.

--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -3209,6 +3209,12 @@ ngx_http_upstream_add(ngx_conf_t *cf, ng
             continue;
         }
 
+        if (uscfp[i]->default_port && u->default_port
+            && uscfp[i]->default_port != u->default_port)
+        {
+            continue;
+        }
+
         return uscfp[i];
     }