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QuestionVista, VPN and DHCP Option 249 Classless Routes

  • Friday, March 23, 2007 2:58 AMDave Hagarty Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    My Vista Ultimate VPN client is not accepting/adding routes from my dhcp server over vpn.  I can connect to all machines on the corp network thru vpn, but I can't hit any machines on other subnets at work because the routes aren't being added.  This works fine on xp thru vpn.

    Any clues?

     

     

     

     

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  • Friday, March 23, 2007 8:23 AMRamaSubbu SKMSFTUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi,

     Vista DHCP Client can accepts Classless Static Routes [CSR] in two options either in 121 or 249. If both the options are present in the packet, Option 121 will take precedence. At present Vista DHCP Client cannot accept any duplicate Classless Static Route, Make sure the DHCP Server is not sending any duplicate CSRs in option 121 or 249.

    Thanks

     
  • Friday, March 23, 2007 10:38 AMDave Hagarty Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I don't even see option 121 in my scope options.  No dups are being sent either.  Also, these options are set under the Default User class, or should they be set under the default RRAS class?

    Should IPv6 be disabled on Vista for this to work?

    Any other options I need to set?  Turn off?

     

     

     

     

     
  • Friday, March 23, 2007 2:58 PMRamaSubbu SKMSFTUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    hi,

     Option 121 will be available only on Longhorn Server. In Windows 2003 the Option number will be 249. Can you send us the eventlog of client and NETMON captures ?

    NETMON 3 is available at http://www.microsoft.com/downloads

    Thanks

     
  • Wednesday, March 28, 2007 2:00 AMDave Hagarty Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I have sent the capture and log events to you in email.

     

    Thx

     

     

     
  • Friday, May 25, 2007 6:18 AMGenerateITQuestion Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I'm wondering how this problem was solved.  I have the same problem.  I'm using windows 2003 R2 RAS as a PPTP VPN concentrated and none of my Vista systems will accept classless routes but all my XP systems are fine.
     
  • Friday, May 25, 2007 3:45 PMRamaSubbu SKMSFTUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Install the latest QFE (revision 2.0)  http://support.microsoft.com/kb/933340/

     

    After installing the QFE Please check the file version of dhcpcsvc.dll. It should be 6.0.6000.20567 as mention in kb  article

     

    And Create 0(dword) register value under “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dhcp\Parameters\DhcpGlobalForceBroadcastFlag\0” and set it  to Zero

    or run following cmd from elevated prompt

    “reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dhcp\Parameters\DhcpGlobalForceBroadcastFlag\0 /f /v 0 /t REG_DWORD /d 0”

     

    Stop and start dhcp service (Net Stop dhcp & net start dhcp) and try to repro the scenario after that.

     

    Thanks