这是 Ubuntu 16.04 客户端的输出：
OpenSSH_7.2p2 Ubuntu-4, OpenSSL 1.0.2g-fips 1 Mar 2016
debug1: Reading configuration data /home/manuth/.ssh/config
debug1: /home/manuth/.ssh/config line 1: Applying options for r2d2.manuth.life
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to r2d2.manuth.life [103.12.163.90] port 900.
debug1: Connection established.
debug1: identity file /home/manuth/.ssh/dqar-rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/dqar-rsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4
ssh_exchange_identification: …客户端是 Ubuntu 16.04 keychain，服务器是 FreeBSD 10.3。~/.ssh/authorized_keys服务器上只有一个密钥（这个密钥是 ECDSA p521 而不是 RSA），客户端里面有私钥和公钥~/.ssh。问题是客户端不断发送所有可用的 RSA 密钥~/.ssh- 请参阅此详细输出：
OpenSSH_7.2p2 Ubuntu-4, OpenSSL 1.0.2g-fips 1 Mar 2016
debug1: Reading configuration data /home/manuth/.ssh/config
debug1: /home/manuth/.ssh/config line 1: Applying options for r2d2.manuth.life
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to r2d2.manuth.life [103.12.163.90] port 900.
debug1: Connection established.
debug1: identity file /home/manuth/.ssh/dqar type 3
debug1: key_load_public: No such file or directory
debug1: identity file /home/manuth/.ssh/dqar-cert …