Powershell Foreach-Schleife in Foreach-Schleife

clear
$dateiPfad1 = "C:\Powershell Scripte\IP-Adressen anpingen\IP-Adressen_Test.csv" #Löschen für fertiges Program  
$hosts = Import-Csv -Path $dateiPfad1 -Delimiter ";" -Header "NetworkName","CIDR","IP","DhcpArea","DhcpReservation","Hostname","Comment","PingSuccess"  
$referece = $hosts

$dhcpHostReservation = Get-DhcpServerv4Scope -ComputerName dhcp-01.raiffeisen.local | Get-DhcpServerv4Reservation -ComputerName dhcp-01.raiffeisen.local #| Select-Object -Property IPAddress,ScopeID
#$dhcpHostScope = Get-DhcpServerv4Scope -ComputerName dhcp-01.raiffeisen.local | Select-Object -Property StartRange,EndRange 
$dateiPfad2 = "C:\Powershell Scripte\IP-Adressen anpingen\DHCP-Area_Test.csv"  
$dhcpHostScope = import-csv -Path $dateiPfad2 -Delimiter ";" -Header "StartRange","EndRange"   
[bool[]]$dhcpArea

function Test-IfIPisinDhcpArea($ip1, $ip2, $ip3){
    [double[]]$arrDouble1 = $ip1.Split(".")  
    [double[]]$arrDouble2 = $ip2.Split(".")  
    [double[]]$arrDouble3 = $ip3.Split(".")  
    $wert1 = $arrDouble1 * 1000000000 + $arrDouble1[1] * 1000000 + $arrDouble1[2] * 1000 + $arrDouble1[3] * 1
    $wert2 = $arrDouble2 * 1000000000 + $arrDouble2[1] * 1000000 + $arrDouble2[2] * 1000 + $arrDouble2[3] * 1
    $wert3 = $arrDouble3 * 1000000000 + $arrDouble3[1] * 1000000 + $arrDouble3[2] * 1000 + $arrDouble3[3] * 1

    if ($wert1 -ge $wert2 -and $wert1 -le $wert3){
        $area = $true
    }
    else{
        $area = $false
    }
    return $area
}

foreach ($h in $hosts) {
    foreach ($r in $dhcpHostReservation) {
        if($r.IPAddress -eq $h.IP) {
            $h.DhcpReservation = 'X'  
            $h.Hostname = $r.Name
        } else {
            $h.DhcpReservation = ''  
            $h.Hostname = $r.Name
        }
    }
    $result = Test-Connection $h.IP -Count 1 -Quiet
    if ($result -eq $true) {
        write-host "IP: $($h.IP) ist erreichbar." -ForegroundColor Green  
        $h.PingSuccess = 'X'  
    } else {
        write-host "IP: $($h.IP) ist nicht erreichbar." -ForegroundColor Magenta  
        $h.PingSuccess = ''  
    }
}

#Es geht um diesen Abschnitt
foreach ($d in $dhcpHostScope){
    foreach ($h in $hosts){
        $dhcpArea=Test-IfIpIsInDhcpArea $h.IP $d.StartRange $d.EndRange 

        if($dhcpArea-eq $true){
            $h.DhcpArea = '#'  
        }
        else{
            $h.DhcpArea = ''  
        }
    }
}

$dateiPfadNeu = "U:\Projekte\Powershell Scripte\IP-Adressen anpingen\IP-Adressen anpingen neu.csv"  
$hosts | Select-Object -Property IP,DhcpArea,DhcpReservation,PingSuccess | Export-Csv -Path $dateiPfadNeu -Delimiter ";" -NoTypeInformation