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Fix DHCP DNS reset handling (#4800)

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This commit is contained in:
Chris Titus
2026-07-02 15:24:14 -05:00
committed by GitHub
parent e2d6f8534e
commit 32891ada55
4 changed files with 139 additions and 5 deletions
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functions/private/Set-WinUtilDNS.ps1
+17 -4
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@@ -12,25 +12,38 @@ function Set-WinUtilDNS {
#>
param($DNSProvider)
if($DNSProvider -eq "Default") {
Write-WinUtilLog -Component "DNS" -Message "DNS provider is Default; no DNS changes applied."
return
}
try {
$Adapters = Get-NetAdapter | Where-Object {$_.Status -eq "Up"}
Write-Host "Ensuring DNS is set to $DNSProvider on the following interfaces:"
Write-Host $($Adapters | Out-String)
Write-WinUtilLog -Component "DNS" -Message "Setting DNS provider to $DNSProvider for $(@($Adapters).Count) active adapter(s)."
if($DNSProvider -ne "DHCP") {
$dns = $sync.configs.dns.$DNSProvider
if($null -eq $dns) {
Write-Warning "DNS provider $DNSProvider was not found in configuration."
Write-WinUtilLog -Level "ERROR" -Component "DNS" -Message "DNS provider $DNSProvider was not found in configuration."
return
}
}
Foreach ($Adapter in $Adapters) {
if($DNSProvider -eq "DHCP") {
Write-WinUtilLog -Component "DNS" -Message "Resetting DNS to DHCP on adapter $($Adapter.Name) (ifIndex: $($Adapter.ifIndex))."
Set-DnsClientServerAddress -InterfaceIndex $Adapter.ifIndex -ResetServerAddresses
netsh interface ip set dnsservers name="$($Adapter.Name)" source=dhcp
netsh interface ipv6 set dnsservers name="$($Adapter.Name)" source=dhcp
} else {
Write-WinUtilLog -Component "DNS" -Message "Setting IPv4 DNS on adapter $($Adapter.Name) (ifIndex: $($Adapter.ifIndex)) to $($sync.configs.dns.$DNSProvider.Primary), $($sync.configs.dns.$DNSProvider.Secondary)."
Set-DnsClientServerAddress -InterfaceIndex $Adapter.ifIndex -ServerAddresses ("$($sync.configs.dns.$DNSProvider.Primary)", "$($sync.configs.dns.$DNSProvider.Secondary)")
Write-WinUtilLog -Component "DNS" -Message "Setting IPv6 DNS on adapter $($Adapter.Name) (ifIndex: $($Adapter.ifIndex)) to $($sync.configs.dns.$DNSProvider.Primary6), $($sync.configs.dns.$DNSProvider.Secondary6)."
Set-DnsClientServerAddress -InterfaceIndex $Adapter.ifIndex -ServerAddresses ("$($sync.configs.dns.$DNSProvider.Primary6)", "$($sync.configs.dns.$DNSProvider.Secondary6)")
Write-WinUtilLog -Component "DNS" -Message "Setting IPv4 DNS on adapter $($Adapter.Name) (ifIndex: $($Adapter.ifIndex)) to $($dns.Primary), $($dns.Secondary)."
Set-DnsClientServerAddress -InterfaceIndex $Adapter.ifIndex -ServerAddresses ($dns.Primary, $dns.Secondary)
Write-WinUtilLog -Component "DNS" -Message "Setting IPv6 DNS on adapter $($Adapter.Name) (ifIndex: $($Adapter.ifIndex)) to $($dns.Primary6), $($dns.Secondary6)."
Set-DnsClientServerAddress -InterfaceIndex $Adapter.ifIndex -ServerAddresses ($dns.Primary6, $dns.Secondary6)
}
}
Write-WinUtilLog -Component "DNS" -Message "DNS provider change completed: $DNSProvider"