title: What are the enumerations of tIdIpVersion?
body: <p>I use delphi seattle whose indy version is 10.6.2.5311. The version of indy reference included in the delphi is 10.1.5.</p>
  
  <p>I try to get ip addresses of ipv4 in the local network.</p>
  
  <p>The enumerations of tIdIpVersion, id_ipv4 and id_ipv6 are not recognized in seattle. I guess they were changed. I can't jump into tIdIpVersion because I use a trial version.</p>
  
  <pre><code>procedure TForm1.FormCreate(Sender: TObject);
  var
    _AddressList: TIdStackLocalAddressList;
    _Address: TIdStackLocalAddress;
    i: Integer;
  begin
    _AddressList := TIdStackLocalAddressList.Create;
  
    TIdStack.IncUsage;
  
    GStack.GetLocalAddressList(_AddressList);
  
    for i := 0 to _AddressList.Count - 1 do
    begin
      _Address := _AddressList[i];
  
      if _Address.IPVersion = id_ipv4 then // id_ipv4 is not identified.
      begin
        Memo1.Lines.Add(_Address.IPAddress);
      end;
    end;
  
    TIdStack.DecUsage;
  
    _AddressList.Free;
  end;
  </code></pre>