ssh funktioniert, aber nicht scp und sftp, auf bionic

Ich habe ein Upgrade von Xenial auf Bionic durchgeführt, und jetzt funktionieren Scp und Sftp nicht mehr. ssh funktioniert. Wenn ich versuche, Dateien von einem anderen Rechner auf den Bionic-Rechner zu übertragen, erhalte ich die Meldung:

lost connection 

Ich füge die ausführliche Ausgabe beider Sitzungen bei.

Wie kann ich scp und sftp wieder zum Laufen bringen?

SCP fehlgeschlagen

Mozart:~ neuwirth$ scp -v ulysses.txt neuwirth@vmstat02.csd.univie.ac.at:/home/neuwirth Executing: program /usr/bin/ssh host vmstat02.csd.univie.ac.at, user neuwirth, command scp -v -t /home/neuwirth OpenSSH_7.6p1, LibreSSL 2.6.2 debug1: Reading configuration data /Users/neuwirth/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 48: Applying options for * debug1: Connecting to vmstat02.csd.univie.ac.at port 22. debug1: Connection established. debug1: identity file /Users/neuwirth/.ssh/id_rsa type 0 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_ed25519-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_7.6 debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4 debug1: match: OpenSSH_7.6p1 Ubuntu-4 pat OpenSSH* compat 0x04000000 debug1: Authenticating to vmstat02.csd.univie.ac.at:22 as 'neuwirth' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ecdsa-sha2-nistp256 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ecdsa-sha2-nistp256 SHA256:Ycp4vNiS6/5L+N+MrdP161M5zpEUyME3iPoEZcycVjA debug1: Host 'vmstat02.csd.univie.ac.at' is known and matches the ECDSA host key. debug1: Found key in /Users/neuwirth/.ssh/known_hosts:23 debug1: rekey after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey after 134217728 blocks debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521> debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Offering public key: RSA SHA256:/7JCnjIqpzc2vh9dxMHju5lYfVQFS4rQ0Y4RkPZ6XP0 /Users/neuwirth/.ssh/id_rsa debug1: Server accepts key: pkalg rsa-sha2-512 blen 279 debug1: Authentication succeeded (publickey). Authenticated to vmstat02.csd.univie.ac.at ([131.130.93.37]:22). debug1: channel 0: new [client-session] debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: pledge: network debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0 debug1: Sending environment. debug1: Sending env LC_CTYPE = UTF-8 debug1: Sending command: scp -v -t /home/neuwirth debug1: client_input_channel_req: channel 0 rtype exit-status reply 0 debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0 debug1: channel 0: free: client-session, nchannels 1 debug1: fd 0 clearing O_NONBLOCK debug1: fd 1 clearing O_NONBLOCK Transferred: sent 2736, received 3012 bytes, in 0.4 seconds Bytes per second: sent 7181.8, received 7906.2 debug1: Exit status 0 lost connection 

SFTP fehlgeschlagen

Mozart:~ neuwirth$ sftp -v neuwirth@vmstat02.csd.univie.ac.at OpenSSH_7.6p1, LibreSSL 2.6.2 debug1: Reading configuration data /Users/neuwirth/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 48: Applying options for * debug1: Connecting to vmstat02.csd.univie.ac.at port 22. debug1: Connection established. debug1: identity file /Users/neuwirth/.ssh/id_rsa type 0 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /Users/neuwirth/.ssh/id_ed25519-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_7.6 debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4 debug1: match: OpenSSH_7.6p1 Ubuntu-4 pat OpenSSH* compat 0x04000000 debug1: Authenticating to vmstat02.csd.univie.ac.at:22 as 'neuwirth' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ecdsa-sha2-nistp256 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ecdsa-sha2-nistp256 SHA256:Ycp4vNiS6/5L+N+MrdP161M5zpEUyME3iPoEZcycVjA debug1: Host 'vmstat02.csd.univie.ac.at' is known and matches the ECDSA host key. debug1: Found key in /Users/neuwirth/.ssh/known_hosts:23 debug1: rekey after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey after 134217728 blocks debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521> debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Offering public key: RSA SHA256:/7JCnjIqpzc2vh9dxMHju5lYfVQFS4rQ0Y4RkPZ6XP0 /Users/neuwirth/.ssh/id_rsa debug1: Server accepts key: pkalg rsa-sha2-512 blen 279 debug1: Authentication succeeded (publickey). Authenticated to vmstat02.csd.univie.ac.at ([131.130.93.37]:22). debug1: channel 0: new [client-session] debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: pledge: network debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0 debug1: Sending environment. debug1: Sending env LC_CTYPE = UTF-8 debug1: Sending subsystem: sftp debug1: client_input_channel_req: channel 0 rtype exit-status reply 0 debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0 debug1: channel 0: free: client-session, nchannels 1 debug1: fd 0 clearing O_NONBLOCK Transferred: sent 2720, received 3012 bytes, in 0.4 seconds Bytes per second: sent 7366.3, received 8157.1 debug1: Exit status 0 Connection closed sftp scp bionic