Set CLAT Get Prefix Information from DNS
Verified with Windows 11 25H2 — updated on September 15, 2026 Supported on: Supported Windows 11
Shipped in a Windows update: not in the official ADMX package (Administrative Templates (.admx) for Windows 11 Oct 2025 Update), present no later than KB5124008 (build 26200.9445).
Path in the GPO console
Computer Configuration\Administrative Templates\Network\TCPIP Settings\IPv6 Transition Technologies Registry
HKLM
Software\Policies\Microsoft\Windows\TCPIP\v6Transition\IPxlatCfgSvc - Value name:
-
GetPrefixInfoFromDNSREG_DWORD - Enabled:
1- Disabled:
0
Description
This policy setting allows DNS to be used as a prefix information source for non-cellular CLAT. If you enable this policy setting, CLAT will be allowed to discover NAT64 prefixes via DNS. If both NAT64 prefix discovery methods are enabled, the order of precedence is (RA, DNS). If you disable this policy setting, CLAT will not be allowed to discover NAT64 prefixes via DNS. If you do not configure this policy setting, the local host setting is used. A reboot is required for this policy setting to take effect.
Export Builder
BETAConfigure the state, scope and options, then generate .reg, PowerShell, Intune and SCCM outputs — or add the setting to a multi-setting collection.
These exports write the registry — this is not a managed GPO. ⓘ
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Set CLAT Get Prefix Information from DNS
; State: Enabled
; Supported on: Supported Windows 11
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\TCPIP\v6Transition\IPxlatCfgSvc]
"GetPrefixInfoFromDNS"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Set CLAT Get Prefix Information from DNS
# State: Enabled
# Supported on: Supported Windows 11
$path = 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition\IPxlatCfgSvc'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'GetPrefixInfoFromDNS' -Value 1 -Type DWordIntune XML
No direct Policy CSP / OMA-URI mapping for this policy. Use the Intune Remediation tab, or ingest the ADMX in Intune.Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Set CLAT Get Prefix Information from DNS
# State: Enabled
# Supported on: Supported Windows 11
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition\IPxlatCfgSvc' -Name 'GetPrefixInfoFromDNS' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Set CLAT Get Prefix Information from DNS
# State: Enabled
# Supported on: Supported Windows 11
$path = 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition\IPxlatCfgSvc'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'GetPrefixInfoFromDNS' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Set CLAT Get Prefix Information from DNS
# State: Enabled
# Supported on: Supported Windows 11
# SCCM Configuration Item guidance:
# Create a Configuration Item of type "Setting: Script".
# Discovery script: use the Detection script below.
# Remediation script: use the Remediation script below.
# Compliance rule: the Discovery script output equals 'Compliant'.
# === Detection script ===
# Exported from gporais.com
# Policy: Set CLAT Get Prefix Information from DNS
# State: Enabled
# Supported on: Supported Windows 11
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition\IPxlatCfgSvc' -Name 'GetPrefixInfoFromDNS' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Set CLAT Get Prefix Information from DNS
# State: Enabled
# Supported on: Supported Windows 11
$path = 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition\IPxlatCfgSvc'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'GetPrefixInfoFromDNS' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.