Index: glibc-2.31/nss/nss_database.c
===================================================================
--- glibc-2.31.orig/nss/nss_database.c
+++ glibc-2.31/nss/nss_database.c
@@ -294,6 +294,8 @@ nss_database_reload (struct nss_database_data *staging,
                      struct file_change_detection *initial)
 {
   FILE *fp = fopen (_PATH_NSSWITCH_CONF, "rce");
+  if (fp == NULL)
+    fp = fopen ("/usr" _PATH_NSSWITCH_CONF, "rce");
   if (fp == NULL)
     switch (errno)
       {