Apr 17 17:21:21 mpc2 sshd[26575]: debug3: oom_adjust_setup
Apr 17 17:21:21 mpc2 sshd[26575]: debug1: Set /proc/self/oom_score_adj from 0 to -1000
Apr 17 17:21:21 mpc2 sshd[26575]: debug2: fd 3 setting O_NONBLOCK
Apr 17 17:21:21 mpc2 sshd[26575]: debug1: Bind to port 2211 on 0.0.0.0.
Apr 17 17:21:21 mpc2 sshd[26575]: Server listening on 0.0.0.0 port 2211.
Apr 17 17:21:21 mpc2 sshd[26575]: debug2: fd 4 setting O_NONBLOCK
Apr 17 17:21:21 mpc2 sshd[26575]: debug3: sock_set_v6only: set socket 4 IPV6_V6ONLY
Apr 17 17:21:21 mpc2 sshd[26575]: debug1: Bind to port 2211 on ::.
Apr 17 17:21:21 mpc2 sshd[26575]: Server listening on :: port 2211.
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: fd 5 is not O_NONBLOCK
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: Server will not fork when running in debugging mode.
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: send_rexec_state: entering fd = 8 config len 800
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: ssh_msg_send: type 0
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: send_rexec_state: done
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: already daemonized
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: inetd sockets after dupping: 3, 3
Apr 17 17:21:25 mpc2 sshd[26575]: Connection from 85.14.40.250 port 19406 on 192.168.2.138 port 2211
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: Client protocol version 2.0; client software version OpenSSH_7.3
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: match: OpenSSH_7.3 pat OpenSSH* compat 0x04000000
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: Local version string SSH-2.0-OpenSSH_7.5p1 Debian-10
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: Enabling compatibility mode for protocol 2.0
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: fd 3 setting O_NONBLOCK
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: ssh_sandbox_init: preparing seccomp filter sandbox
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: Network child is on pid 26579
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: preauth child monitor started
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: privsep user:group 107:65534 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: permanently_set_uid: 107/65534 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: ssh_sandbox_child: setting PR_SET_NO_NEW_PRIVS [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: ssh_sandbox_child: attaching seccomp filter program [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: list_hostkey_types: ssh-dss key not permitted by HostkeyAlgorithms [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: list_hostkey_types: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: send packet: type 20 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: SSH2_MSG_KEXINIT sent [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: receive packet: type 20 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: SSH2_MSG_KEXINIT received [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: local server KEXINIT proposal [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: compression ctos: none,zlib@openssh.com [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: compression stoc: none,zlib@openssh.com [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: languages ctos:  [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: languages stoc:  [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: first_kex_follows 0  [preauth]
Apr 17 17:21:25 mpc2 systemd[1]: ssh.service: Main process exited, code=exited, status=255/n/a
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: reserved 0  [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: peer client KEXINIT proposal [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ext-info-c [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: host key algorithms: ssh-ed25519-cert-v01@openssh.com,ssh-ed25519 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: compression ctos: none,zlib@openssh.com,zlib [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: compression stoc: none,zlib@openssh.com,zlib [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: languages ctos:  [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: languages stoc:  [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: first_kex_follows 0  [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug2: reserved 0  [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: kex: algorithm: curve25519-sha256 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: kex: host key algorithm: (no match) [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: Unable to negotiate with 85.14.40.250 port 19406: no matching host key type found. Their offer: ssh-ed25519-cert-v01@openssh.com,ssh-ed25519 [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: do_cleanup [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: PAM: sshpam_thread_cleanup entering [preauth]
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: monitor_read_log: child log fd closed
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: mm_request_receive entering
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: do_cleanup
Apr 17 17:21:25 mpc2 sshd[26575]: debug3: PAM: sshpam_thread_cleanup entering
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: Killing privsep child 26579
Apr 17 17:21:25 mpc2 sshd[26575]: debug1: audit_event: unhandled event 12
Apr 17 17:21:25 mpc2 systemd[1]: ssh.service: Unit entered failed state.
Apr 17 17:21:25 mpc2 systemd[1]: ssh.service: Failed with result 'exit-code'.