Как пропинговать IP-адреса, содержащиеся в XML-файле?

[xml]$servers = Get-Content 'webservers.xml'
foreach ($address in $servers.DocumentElement.SelectNodes("./server/@address")) {
    $uriHost = ([System.Uri]$address.Value).Host
    ping $uriHost
}

$regex = [regex]"\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b"
($regex.Matches((gc C:\Temp\test.xml))).Value | %{if(!(Test-Connection $_ -q -cou 2)){$_ | ac C:\Temp\not_accessible.txt}}

[xml]$servers = Get-Content 'webservers.xml'
foreach ($address in $servers.DocumentElement.SelectNodes("//webservers/server/@address")) {
    $uriHost = ([System.Uri]$address.Value).Host
    Write-Host "Checking $uriHost"
    $reply = Get-WmiObject -Class Win32_PingStatus -Filter "Address='$uriHost' and Timeout=4000"
    if ($reply.StatusCode -ne 0) {
        Add-Content not_accessible.txt $uriHost
    }
}

$xml = [Xml](Get-Content -Path 'C:\temp\test.xml')
foreach ($item in $xml.SelectNodes("//server"))
{
    if($item.ip) {$ip = $item.ip}
    elseif ($item.address) {$ip = ([System.Uri]$item.address).Host}
    
    if(-not (Test-Connection -ComputerName $ip -Quiet -Count 2))
    {
        Add-Content -Value $ip -Path 'C:\Temp\not_accessible.txt'
    }
}

([Xml](gc servers.xml)).SelectNodes("//server")|%{if($ip=$_.ip){}else{$ip=([Uri]$_.address).Host};if(!(Test-Connection $ip -q)){ac no_access.log $ip}}

Get-Content -Path 'd:\test_config.xml' | ForEach-Object {$_ -replace '"http://1.1.1.1/"','"http://1.1.1.3/"'} | Set-Content 'd:\test_config.xml'

$xml = [xml](gc 'd:\test_config.xml')
($xml.SelectNodes("//webservers/server") | ? address -eq 'http://1.1.1.1/').address = 'http://1.1.1.3/'
$xml.Save('d:\test_config.xml')

$xml = [xml](gc 'd:\test_config.xml')
($xml.SelectNodes("//webservers/server") | ? address -eq 'http://1.1.1.1/').address = 'http://1.1.1.3/'
$xml.Save('d:\test_config.xml')

$xml = [xml](gc 'd:\test_config.xml')
$webserver = $xml.SelectNodes("//webservers/server") | ?{$_.address -eq 'http://1.1.1.1/'}
$webserver.address = 'http://1.1.1.3/'
$xml.Save('d:\test_config.xml')