Why is ecdsa algorithm not selected (PubkeyAcceptedAlgorithms)?

[Stefan4112]

I have following log:

11:55:15.158 [main ] [DEBUG] PubkeyAcceptedAlgorithms = ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256,ssh-dss,ssh-rsa
11:55:15.158 [main ] [DEBUG] PubkeyAcceptedAlgorithms in server-sig-algs = [ecdsa-sha2-nistp256, ecdsa-sha2-nistp384, ecdsa-sha2-nistp521, rsa-sha2-512, rsa-sha2-256, ssh-rsa]
11:55:15.159 [main ] [DEBUG] PubkeyAcceptedAlgorithms not in server-sig-algs = [ssh-ed25519, ssh-dss]
11:55:15.172 [main ] [DEBUG] rsa-sha2-512 preauth success
11:55:15.989 [main ] [DEBUG] rsa-sha2-512 auth failure
11:55:16.002 [main ] [DEBUG] rsa-sha2-256 preauth success
11:55:16.346 [main ] [DEBUG] rsa-sha2-256 auth failure
11:55:16.360 [main ] [DEBUG] ssh-rsa preauth success
11:55:16.943 [main ] [DEBUG] ssh-rsa auth failure
11:55:16.943 [main ] [DEBUG] ssh-rsa cannot be used as public key type for identity myprivate.key

Why are all ecdsa algorithms skipped? They are supported by client and server. Both prefer them over rsa.

[norrisjeremy]

Because you haven't loaded an ECDSA auth key into JSch.