[5578] in North American Network Operators' Group
RE: Windows/NT to break the Internet?
daemon@ATHENA.MIT.EDU (Hank Nussbacher)
Tue Oct 22 01:00:07 1996
Date: Mon, 21 Oct 96 07:37:32 UTC
From: Hank Nussbacher <hank@ibm.net.il>
To: Peter Ford <peterf@microsoft.com>
Cc: nanog@merit.edu
On Fri, 18 Oct 1996 11:16:28 -0700 Peter Ford wrote:
>
>Hank,
>
>Have your tried to replicate your customer's problem? We have tested
>setting the prefix mask in the IP stack in NT 4.0 and it can be set to
>prefixes longer than 24.
>
>cheers, peter
I have to apologize for the lack of clarity since I was getting the
reports from customers. The problem is NOT in setting a prefix mask.
The problem is with inverse for subnets. From the install notes of
Windows/NT (DNS and Microsoft Windows NT 4.0) dated May 12, 1996 (page
28), under the section 'Configuring Reverse Lookup' the doc says, and
I quote:
??? I haven't a clue. I think there is a bug???
end quote.
The defacto standard for doing subnetting and inverse has been documented
in a draft standard:
ftp://ietf.cnri.reston.va.us/internet-drafts/draft-ietf-cidrd-classless-inaddr-00.txt
I hope Microsoft can get this fixed since I have had to start allocating
/24s to very small sites in order to bypass this problem.
Hank
