Получить IPv4-адрес и использовать его в качестве аргумента для команды NETSH

function fastpingtest {
    $ping = New-Object System.Net.NetworkInformation.Ping;
    $ping.Send("8.8.8.8", 1000).status -eq "success";
}
$endtime = [datetime]::Now.AddMinutes(1);
$mapipv6 = $false; 
while([datetime]::Now -lt $endtime) {
    if(fastpingtest) { $mapipv6 = $true; break; }
}
 
if($mapipv6) {
    $wc = New-Object net.webclient;
    $url= "https://ipv4.tunnelbroker.net/ipv4_end.php?ip=AUTO&pass={1}&apikey={0}&tid={2}";
 
    $values = "USERID", "PASSWORDMD5HASH", TUNNELID;
    $wc.DownloadString(($url -f $values));
    
    #get connected interface
    $interface = netsh interface ipv4 show interface | findstr /c:" connected" | ?{!$_.contains("Loopback");} | %{[regex]::Split($_, "( )+") | ?{$_.trim().length -gt 0} | %{$_.trim()}; }
    $interface_ip = (netsh interface ipv4 show address $interface[0] | findstr /c:"IP Address" | select -First 1).split(":")[1].trim()
    netsh interface teredo set state disabled
    netsh interface ipv6 add v6v4tunnel IP6Tunnel $interface_ip HEIPv4ENDPOINT
    netsh interface ipv6 add address IP6Tunnel YOURIPv6ADDRESS
    netsh interface ipv6 add route ::/0 IP6Tunnel HEIPv6ADDRESS

    #get connected interface
    $ipAddress = Test-Connection -ComputerName EAGauss -Count 1  | Select -ExpandProperty IPV4Address
    $interface_ip = $ipAddress.IPAddressToString

$ipAddress = Test-Connection -ComputerName EAGauss -Count 1  | Select -ExpandProperty IPV4Address
$interface_ip = $ipAddress.IPAddressToString

netsh interface ipv6 add v6v4tunnel IP6Tunnel "$interface_ip" 127.0.0.1

$command="interface ipv6 add v6v4tunnel IP6Tunnel $interface_ip 127.0.0.1"
$command|netsh

$ip_2="216.66.80.30"
$command="interface ipv6 add v6v4tunnel IP6Tunnel $interface_ip $ip_2"
$command|netsh

function fastpingtest 
    {
    $ping = New-Object System.Net.NetworkInformation.Ping;
    $ping.Send("8.8.8.8", 1000).status -eq "success"; }
    $endtime = [datetime]::Now.AddMinutes(1);
    $mapipv6 = $false; 
while([datetime]::Now -lt $endtime) 
    { 
if(fastpingtest) 
    { 
    $mapipv6 = $true; break; 
    } 
    }
if($mapipv6) 
    { $ipAddress = Test-Connection -ComputerName hostname -Count 1  | Select -ExpandProperty IPV4Address
    $interface_ip = $ipAddress.IPAddressToString 
    $wc = New-Object net.webclient;
    $url= "https://ipv4.tunnelbroker.net/ipv4_end.php?ip={0}&pass={1}&user_id={2}&tid={3}";
    $values = $interface_ip, "MD5PASS", "USERID", TUNNELID;
    $wc.DownloadString(($url -f $values));
    netsh interface ipv6 add address IP6Tunnel ClientIPv6Address
    netsh interface ipv6 add route ::/0 IP6Tunnel ServerIPv6Address
    netsh interface ipv6 delete interface IP6Tunnel
    netsh interface ipv6 add v6v4tunnel IP6Tunnel $interface_ip ServerIPv4Address
    }