DOCUMENT:Q314284  08-MAY-2002  [winnt]
TITLE   :Windows NT May Drop Fragmented IP Packets During RAS
PRODUCT :Microsoft Windows NT
PROD/VER::4.0
OPER/SYS:
KEYWORDS:

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The information in this article applies to:

 - Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

Under certain situations, User Datagram Protocol (UDP) network packets may be
discarded during a Remote Access Service (RAS) connection.

CAUSE
=====

This problem occurs if a UDP packet is spit into two Internet protocol (IP)
fragments and the second fragment arrives before the first because Windows
NT-based computers may incorrectly discard the second IP fragment. When this
occurs, the UDP packet is discarded.


RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem.

To resolve this problem, 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://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

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

   Date         Time   Version        Size    File name     
   -----------------------------------------------------
   12-DEC-2001  13:51  4.0.1381.7117  12,944  Rasarp.sys



STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products that are
listed at the beginning of this article.

Additional query words:

======================================================================
Keywords          :  
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : :4.0
Issue type        : kbbug
Solution Type     : kbfix

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