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Description:  

This policy setting enables or disables PNRP cloud creation.

PNRP is a distributed name resolution protocol allowing Internet hosts to publish peer names with a
corresponding Internet Protocol version 6 (IPv6) address. Other hosts can then resolve the name, retrieve
the corresponding address, and establish peer-to-peer (P2P) connections. The PNRP cloud is a group of
connected PNRP nodes, in which connections exist between peers so that a node in the PNRP cloud can
resolve names published by other nodes.

PNRP creates a global cloud if the computer has a global IPv6 address, but creates a site-local cloud if the
computer has a site-local address.

If you enable this policy setting, PNRP does not create a cloud, and applications cannot use this cloud to
publish or resolve names regardless of whether the computer has an IPv6 address that matches the cloud
scope.

If you disable or do not configure this policy setting, all PNRP clouds are turned on by default, and PNRP
creates a cloud if the computer has an IPv6 address compatible with the cloud’s scope.

Supported on: At least Windows XP Professional with SP2.
Turn off PNRP cloud creation
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 ->
IPv6-SiteLocal and open Turn off PNRP cloud creation.
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 or Disable. The GPO Default state
is Not Configured -> this registry entry is not present.

Please navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Peernet\Pnrp
\IPv6-SiteLocal
and locate Disabled 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 Disabled and edit the value:

To Enable:
Change the data value with 1

To Disable:
Change the data value with 0

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-SiteLocal" /v Disabled /t REG_DWORD /d 1 /f

Disabled:
REG add "HKLM\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-SiteLocal" /v Disabled /t REG_DWORD /d 0 /f

Not Configured:
REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-SiteLocal" /v Disabled /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-SiteLocal"
oReg.CreateKey HKEY_LOCAL_MACHINE,strKeyPath
strValueName = "Disabled"
'Enabled
dwValue = 1
'Disabled
'dwValue = 0
oReg.SetDWORDValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName,dwValue
'Not Configured
'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-SiteLocal"))
  {
    $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-SiteLocal"
    ##Enabled
    New-ItemProperty -path $RegKey -name Disabled -value 1 -PropertyType DWord -Force
    ##Disabled
    ##New-ItemProperty -path $RegKey -name Disabled -value 0 -PropertyType DWord -Force
  }
  else
  {
    New-Item -path $RegKey -name IPv6-SiteLocal
    $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-SiteLocal"
    ##Enabled
    New-ItemProperty -path $RegKey -name Disabled -value 1 -PropertyType DWord
    ##Disabled
    ##New-ItemProperty -path $RegKey -name Disabled -value 0 -PropertyType DWord
  }
}
else
{
  New-Item -path $RegKey -name Pnrp
  $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp"
  New-Item -path $RegKey -name IPv6-SiteLocal
  $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-SiteLocal"
  ##Enabled
  New-ItemProperty -path $RegKey -name Disabled -value 1 -PropertyType DWord
  ##Disabled
  ##New-ItemProperty -path $RegKey -name Disabled -value 0 -PropertyType DWord
}
}
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-SiteLocal
 $RegKey = "HKLM:\SOFTWARE\Policies\Microsoft\Peernet\Pnrp\IPv6-SiteLocal"
 ##Enabled
 New-ItemProperty -path $RegKey -name Disabled -value 1 -PropertyType DWord
 ##Disabled
 ##New-ItemProperty -path $RegKey -name Disabled -value 0 -PropertyType DWord
}

Not Configured

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