Hi Ysbrand,
I have made your suggestions without succes. Here the output of ssh -v
OpenSSH_6.7p1 Debian-5, OpenSSL 1.0.1k 8 Jan 2015
debug1: Reading configuration data /home/pu/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.0.22 [192.168.0.22] port 22.
debug1: Connection established.
debug1: identity file /home/pu/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/pu/.ssh/id_rsa-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.7p1 Debian-5
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.0p1 Debian-4+deb7u2
debug1: match: OpenSSH_6.0p1 Debian-4+deb7u2 pat OpenSSH* compat 0x04000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr
umac-64@openssh.com none
debug1: kex: client->server aes128-ctr
umac-64@openssh.com none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA de:80:d1:e7:70:e9:a9:95:d0:54:90:1f:ad:47:60:85
debug1: Host '192.168.0.22' is known and matches the ECDSA host key.
debug1: Found key in /home/pu/.ssh/known_hosts:6
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/pu/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: password
perhaps you find my fault.