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Description:  

This setting sets the seed server for the link local cloud to a specified node in the enterprise.

The Peer Name Resolution Protocol (PNRP) allows for distributed resolution of a name to an IPV6 address and
port number. The protocol, in some cases, requires a seed server from which to get bootstrapped. This
setting allows for setting the seed server to a specified node in an enterprise.

To use this setting, click Enable, and then enter a semicolon-delimited list of IPV6 addresses in the available
field. If you enable this setting and you don’t enter any address, no seed server will be used.

If this setting is not configured, the protocol will revert to using a public registry key to determine the seed
server to bootstrap from.

Supported on: At least Windows XP Professional with SP2.
Set the Seed Server
Description Gpedit Regedit CMD Back VBScript PowerShell Script
Gpedit:   

Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Type gpedit.msc and press Enter
In the Group Policy window please navigate to Computer Configuration -> Administrative Templates ->
Network -> Microsoft Peer-to-Peer Networking Services -> Peer Name Resolution Protocol ->
Link-Local Clouds and open Set the Seed Server.
Not Configured -> is the Default state
Enabled -> apply this GPO
Disabled -> this GPO will not be applied

To finish press ok button and close Group Policy window.
Description Gpedit Regedit CMD Up Back VBScript
Type regedit and press ok
Please confirm User Account Control pop-up
Microsoft official disclaimer

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by
using another method. These problems might require that you reinstall the operating system. Microsoft
cannot guarantee that these problems can be solved. Modify the registry at your own risk.

Note: This registry key is created by Group Policy when this GPO is Enable. The GPO Default state is Not
Configured -> this registry entry is not present. For Disable this registry entry is not present.

Please navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Peernet\Pnrp
\IPv6-LinkLocal
and locate SeedServer registry key
Regedit:          

Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Description Gpedit Regedit CMD Up Back VBScript
Double click on SeedServer and edit the value:

To Enable:
SeedServer = 2001:0:5ef5:89fd:28:1d00:3f57:fef9

To finish press ok button and close Registry Editor window

Note: Manual editing of this registry key will not be reflected in Group Policy. If you modify this GPO from
Group Policy this registry key will be rewritten.
Description Gpedit Regedit Back CMD VBScript Up
Type cmd, right click on cmd icon under the Programs and click on Run as administrator
Please confirm User Account Control pop-up
Please select, right and copy a registry key from below, then right click on command prompt window
, select Paste and press Enter

Enabled:
REG add "HKLM\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-LinkLocal" /v SeedServer /t REG_SZ /d "2001:0:5ef5:89fd:28:1d00:3f57:fef9" /f

Not Configured\Disabled:
REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-LinkLocal" /v SeedServer /f

Note: Manual editing of this registry key will not be reflected in Group Policy. If you modify this GPO from
Group Policy this registry key will be rewritten.
CMD:          

Please perform the following steps:

Please go to Pearl button (Start) and click on the Search programs and files
For more information about the change from Start to Pearl button click here
Description Gpedit Regedit Back CMD VBScript Up
VBScript:          

Const HKEY_LOCAL_MACHINE = &H80000002
strComputer = "."
Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" & _
strComputer & "\root\default:StdRegProv")

strKeyPath = "SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-LinkLocal"
oReg.CreateKey HKEY_LOCAL_MACHINE,strKeyPath
strValueName = "SeedServer"
'Enabled
strValue = cstr("2001:0:5ef5:89fd:28:1d00:3f57:fef9")
oReg.SetStringValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName,strValue
'Not Configured\Disabled
'oReg.DeleteValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName
Description Gpedit Regedit Back CMD VBScript Up
PowerShell Script :          

Enabled\Disabled

$RegKey = "HKLM:\SOFTWARE\Policies\Microsoft"
If(Test-Path ($RegKey + "\Peernet"))
{
$RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet"
If(Test-Path ($RegKey + "\Pnrp"))
{
  $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp"
  If(Test-Path ($RegKey + "\IPv6-LinkLocal"))
  {
    $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-LinkLocal"
    ##Enabled
    New-ItemProperty -path $RegKey -name SeedServer -value "2001:0:5ef5:89fd:28:1d00:3f57:fef9" -PropertyType String -Force
  }
  else
  {
    New-Item -path $RegKey -name IPv6-LinkLocal
    $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-LinkLocal"
    ##Enabled
    New-ItemProperty -path $RegKey -name SeedServer -value "2001:0:5ef5:89fd:28:1d00:3f57:fef9" -PropertyType String
  }
}
else
{
  New-Item -path $RegKey -name Pnrp
  $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp"
  New-Item -path $RegKey -name IPv6-LinkLocal
  $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-LinkLocal"
  ##Enabled
  New-ItemProperty -path $RegKey -name SeedServer -value "2001:0:5ef5:89fd:28:1d00:3f57:fef9" -PropertyType String
}
}
else
{
 New-Item -path $RegKey -name Peernet
 $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet"
 New-Item -path $RegKey -name Pnrp
 $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp"
 New-Item -path $RegKey -name IPv6-LinkLocal
 $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-LinkLocal"
 ##Enabled
 New-ItemProperty -path $RegKey -name SeedServer -value "2001:0:5ef5:89fd:28:1d00:3f57:fef9" -PropertyType String
}

Not Configured/Disabled

$RegKey = "HKLM:\SOFTWARE\Policies\Microsoft"
Remove-ItemProperty -Path($RegKey + "\Peernet\Pnrp\IPv6-LinkLocal") -name SeedServer
If( (Get-Item -Path($RegKey + "\Peernet\Pnrp\IPv6-LinkLocal")).ValueCount -eq 0 -and (Get-Item -Path($RegKey + "\Peernet\Pnrp\IPv6-LinkLocal")).SubKeyCount -eq 0)
{
Remove-Item -Path($RegKey + "\Peernet\Pnrp\IPv6-LinkLocal")
If( (Get-Item -Path($RegKey + "\Peernet\Pnrp")).ValueCount -eq 0 -and (Get-Item -Path($RegKey + "\Peernet\Pnrp")).SubKeyCount -eq 0)
{
 Remove-Item -Path($RegKey + "\Peernet\Pnrp")
 If( (Get-Item -Path($RegKey + "\Peernet")).ValueCount -eq 0 -and (Get-Item -Path($RegKey + "\Peernet")).SubKeyCount -eq 0)
 {
  Remove-Item -Path($RegKey + "\Peernet")
 }
}
}
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