===== sql/hostname.cc 1.20 vs edited =====
--- 1.20/sql/hostname.cc	2003-01-27 22:38:22 -08:00
+++ edited/sql/hostname.cc	2005-03-04 14:34:32 -08:00
@@ -175,7 +175,8 @@
 				 &tmp_errno)))
   {
     DBUG_PRINT("error",("gethostbyname_r returned %d",tmp_errno));
-    add_wrong_ip(in);
+    if(tmp_errno == HOST_NOT_FOUND || tmp_errno == NO_DATA) 
+      add_wrong_ip(in); /* only cache negative responses, not failures */
     my_gethostbyname_r_free();
     DBUG_RETURN(0);
   }
@@ -198,13 +199,17 @@
   {
     VOID(pthread_mutex_unlock(&LOCK_hostname));
     DBUG_PRINT("error",("gethostbyaddr returned %d",errno));
-    goto err;
+
+    if(errno == HOST_NOT_FOUND || errno == NO_DATA)
+      add_wrong_ip(in); /* only cache negative responses, not failures */
+
+    DBUG_RETURN(0);
   }
   if (!hp->h_name[0])				// Don't allow empty hostnames
   {
     VOID(pthread_mutex_unlock(&LOCK_hostname));
     DBUG_PRINT("error",("Got an empty hostname"));
-    goto err;
+    goto add_wrong_ip_and_return;;
   }
   if (!(name=my_strdup(hp->h_name,MYF(0))))
   {
@@ -231,7 +236,7 @@
     {
       DBUG_PRINT("error",("mysqld doesn't accept hostnames that starts with a number followed by a '.'"));
       my_free(name,MYF(0));
-      goto err;
+      goto add_wrong_ip_and_return;
     }
   }
 
@@ -247,7 +252,7 @@
   DBUG_PRINT("error",("Couldn't verify hostname with gethostbyname"));
   my_free(name,MYF(0));
 
-err:
+add_wrong_ip_and_return:
   add_wrong_ip(in);
   DBUG_RETURN(0);
 }