$web = Invoke-WebRequest -Method Get -Uri "https://ipv4.icanhazip.com/"
$ip = $web.Content
$hostname = "server01.llama.se"
$user = "llama.se"
$pass = "bllllllaaahg"

$pair = "${user}:${pass}"
$bytes = [System.Text.Encoding]::ASCII.GetBytes($pair)
$base64 = [System.Convert]::ToBase64String($bytes)
$basicAuthValue = "Basic $base64"
$headers = @{ Authorization = $basicAuthValue }


Invoke-WebRequest -Method Post -Uri "https://dyndns.loopia.se?hostname=$hostname&MyIP=$ip" -Headers $headers