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+
+ ## **go  version**
+ go1.19.2 darwin/amd64
+
+## What did you do?
+Start a crypto/tls-based webserver with mtls config as show below.
+`	tlsConfig := &tls.Config{
+		ClientCAs:                caCertPool,
+		ClientAuth:               tls.RequireAndVerifyClientCert,
+	}`
+
+## What did you expect to see?
+You may expect to see a client certificate is getting exchanged for verification.
+
+## What did you see instead?
+A TLS handshake without client certificate exchange.
+![image](https://github.com/golang/go/assets/12743364/743e55d1-c3da-4cb3-b9e7-917811eecd72)
+
+I have tried with other option requestClientCertificate etc but none of them worked. seems a bug.