IP Source Routing in NT4 -- SP5

["Dallas N Bishoff"<Dallas.N.Bishoff () faa gov>]

Based on the technet article referenced by Dave LeBlanc at Microsoft (formerly
ISS) in another forum (NTBUGTRAQ), a Microsoft's knowledge base article... 

http://support.microsoft.com/support/kb/articles/q217/3/36.asp

..addresses the fact that a computer running Windows NT 4.0 could not disable
the source routing feature for teh TCP/IP protocol.  However, after applying SP5
you can disable it by:

1. Start Registry Editor (Regedt32.exe). 
2. Locate the following key in the registry: 
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
  
3. On the Edit menu, click Add Value, and then add the following registry 
   value:

   Value Name: DisableIPSourceRouting
   Data Type:  REG_DWORD
   Value:      0 or 1 
   Note:       1 disables source routing, 0 enables source routing
4. Quit Registry Editor. 

STATUS
Microsoft has confirmed this to be a problem in Microsoft Windows NT 4.0. This
problem was first corrected in Windows NT version 4.0 Service Pack 5.