Try {
    Get-NetRoute `
        -ErrorAction "Stop" `
        -AddressFamily IPv4 `
        -DestinationPrefix ${GCE_METADATA_SERVER}/32 | Out-Null
  } Catch [Microsoft.PowerShell.Cmdletization.Cim.CimJobException] {
    Log-Output -Fatal `
        ("GCE metadata server route is not present as expected.`n" +
         "$(Get-NetRoute -AddressFamily IPv4 | Out-String)")
  }
}