[dns-operations] Web-based DNS Randomness Test

[Stephane Bortzmeyer]

On Fri, Jul 18, 2008 at 05:56:49PM +0000,
 Duane Wessels <wessels at dns-oarc.net> wrote 
 a message of 13 lines which said:

> OARC now has a web-based version of the DNS randomness test:
>
>   https://www.dns-oarc.net/oarc/services/dnsentropy

On most resolvers, it works fine.

But a MS-Windows user, testing a big ISP, reports me that it displays:


   1. 80.12.255.136 (dns-nat-fw4-b.wanadoo.fr) appears to have UNKNOWN
source port randomness and UNKNOWN transaction ID randomness.
   2. 80.12.204.180 appears to have UNKNOWN source port randomness and
UNKNOWN transaction ID randomness.
   3. 80.12.204.178 appears to have UNKNOWN source port randomness and
UNKNOWN transaction ID randomness.
...

What does UNKNOWN means?