diff -Nur mod_wsgi-4.9.1.old/src/server/mod_wsgi.c mod_wsgi-4.9.1/src/server/mod_wsgi.c
--- mod_wsgi-4.9.1.old/src/server/mod_wsgi.c	2022-08-08 10:12:40.044127804 +0800
+++ mod_wsgi-4.9.1/src/server/mod_wsgi.c	2022-08-08 10:14:21.532845853 +0800
@@ -14044,6 +14044,7 @@
             name = ((const char**)trusted_proxy_headers->elts)[i];
 
             if (!strcmp(name, "HTTP_X_FORWARDED_FOR") ||
+                     !strcmp(name, "HTTP_X_CLIENT_IP") ||
                      !strcmp(name, "HTTP_X_REAL_IP")) {
 
                 match_client_header = 1;