diff --git a/xCAT-server/sbin/xcatconfig b/xCAT-server/sbin/xcatconfig
index 66e5921b1..cf004dd61 100755
--- a/xCAT-server/sbin/xcatconfig
+++ b/xCAT-server/sbin/xcatconfig
@@ -1264,7 +1264,7 @@ sub initDB
         $chtabcmds .= "$::XCATROOT/sbin/chtab key=vsftp site.value=n;";
         $chtabcmds .= "$::XCATROOT/sbin/chtab key=cleanupxcatpost site.value=no;";
         $chtabcmds .= "$::XCATROOT/sbin/chtab key=dhcplease site.value=43200;";
-        $chtabcmds .= "$::XCATROOT/sbin/chtab key=useflowcontrol site.value=yes;";
+        #$chtabcmds .= "$::XCATROOT/sbin/chtab key=useflowcontrol site.value=yes;"; # need to fix 4031
 
         if ($::osname eq 'AIX')
         {