Extra Characters Added to DNS Name Query

- Microsoft TCP/IP-32 - Microsoft Windows for Workgroups version 3.11

SYMPTOMS

When you perform a NetBIOS name resolution using Domain Name Service (DNS) by enabling the DNS for Windows Name Resolution option, Microsoft TCP/IP-32 adds an extra character to a domain name if the domain name is exactly 15 characters in length (including the period separating the name). For example, if the domain name is "1.microsoft.com" (without quotes) and the host name is ABCD, the DNS name query sent is "ABCD.1.microsoft.com.8" (without quotes). The extra character that attaches to the end of the DNS name query is commonly the number 8 or the letter X, but can be any character. This behavior does not affect any of the TCP/IP-32 utilities.

WORKAROUND

To work around this problem, do one of the following:

   - Create or use a domain name less or greater than 15 characters.

   - Create or use a local LMHOSTS file for the NetBIOS name resolution.

STATUS

Microsoft has confirmed this to be a problem in TCP/IP-32 version 3.11a. A fix to this problem is in development, but has not been regression-tested and may be destabilizing in production environments. Microsoft does not recommend implementing this fix at this time. Contact Microsoft Product Support Services for more information on the availability of this fix.