Secondary DNS Server Does Not Obtain Glue Records in Delegate Child Domains

ID: Q245252

The information in this article applies to:

Microsoft Windows NT Server version 4.0

SYMPTOMS

When a secondary DNS server is queried for a CNAME record that exists in a parent domain whose glue (A) record exists in a delegated child domain, the secondary DNS server does not attempt to obtain the glue record from the delegated child domain's NS server. Instead, only the CNAME record is returned.

For example, the parent domain is dns.com, and the child domain is small.dns.com. The child domain is delegated to ns1.small.dns.com using an NS record. This information is present on both the primary DNS server (ns1.dns.com) and the secondary DNS server (ns2.dns.com) for this domain. The parent domain contains a CNAME record called www.dns.com, which points to host.small.dns.com.

When a DNS client queries for www.dns.com against the secondary DNS server, the secondary server should query ns1.small.dns.com for the glue (A) record and return both the CNAME and A records to the host. This did not occur.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English-language version of this fix should have the following file attributes or later:


   Date      Time     Size      File name   Platform
   -------------------------------------------------
   10/25/99  02:13p   298,768   Dns.exe     Alpha
   10/25/99  02:14p   177,424   Dns.exe     I386

STATUS

Microsoft has confirmed this to be a problem in Windows NT 4.0.

Additional query words:

Keywords : kbbug4.00 kbfix4.00
Version : winnt:4.0
Platform : winnt
Issue type : kbbug