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