HttpClient send NTLM Ticket instead Kerberos Ticket .NET 5 To Linux Kestrel Server (Negotiate)

[RenatGaliew]

Hey,
I am successful configure my Server Kestrel with Negotiate authentication on linux machine. IE browser sucess using kerberos authentication, Google Chrome Browser Successful connect authenticate on service with Kerberos/ However my application on .net 5 when connet to service using
var httpClientHandler = new HttpClientHandler { UseDefaultCredentials = true };
var httpClient = new HttpClient(httpClientHandler);
var result = await httpClient.SendAsync(httpRequestMessage, httpCompletionOption, cancellationToken).ConfigureAwait(false);
Response 400,
When I started to understand, I found out that the application sends NTLM Token (Authorization: Negotiate TlRMTVNTUAABAAAAl4II4gAAAAAAAAAAAAAAAAAAAAAKAGFKAAAADw==) instead of Kerberos.
What am I doing wrong? Why application send NTLM tickets, but browsers send Kerberos tickets to Negotiate Handler.

[RenatGaliew]

Please guys answer my question 🙏 @davidsh @SteveSyfuhs @CodingBeagle Have any ideas?