Microsoft KB Archive/130273

= NetBT Domain 0x1C Name Fails to Add All #DOM IP Addresses =

Article ID: 130273

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 3.5

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This article was previously published under Q130273



SYMPTOMS
When Netlogon sends discovery mailslots to find a domain controller in a trusted domain, it fails to send directed mailslots to all the domain controllers defined in the LMHOSTS file with the trusted domain name.

You can see the results in the following sample LMHOSTS file and trace. Even though TTOWN5 is defined as an AMERICA Domain Controller, it is never sent a directed mailslot for Netlogon, therefore it may never be used for authentication by a trusting domain.

LMHOSTS file contents:

  144.249.168.234 CIMCON       #DOM:AMERICA        #PRE 144.249.168.104 TTOWN1      #DOM:AMERICA        #PRE 144.249.13.207 TTOWN2       #DOM:AMERICA        #PRE 144.249.168.105 TTOWN3      #DOM:AMERICA        #PRE 144.249.169.16 TTOWN4       #DOM:AMERICA        #PRE 144.249.157.21 TTOWN5       #DOM:AMERICA        #PRE

Trace results:

  EVERST *BROADCAST    NETLOGON SAM LOGON request from client EVERST *NETBIOS Mult NETLOGON SAM LOGON request from client EVERST CIMCON       NETLOGON SAM LOGON request from client EVERST TTOWN1       NETLOGON SAM LOGON request from client EVERST TTOWN2       NETLOGON SAM LOGON request from client EVERST TTOWN3       NETLOGON SAM LOGON request from client EVERST TTOWN4       NETLOGON SAM LOGON request from client



CAUSE
The LMHOSTS parser code in NetBT incorrectly stores IP Addresses when building the  Group Name.



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.5. 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.

Additional query words: 3.50 prodnt

Keywords: KB130273

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