ERROR! SSH encountered an unknown error

TASK [setup] *******************************************************************
<188.226.213.77> ESTABLISH SSH CONNECTION FOR USER: admin
<188.226.213.77> SSH: EXEC ssh -C -vvv -o ForwardAgent=yes -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=admin -o ConnectTimeout=10 -o ControlPath=/Users/aitor/.ansible/cp/ansible-ssh-%h-%p-%r -tt 188.226.213.77 '( umask 22 && mkdir -p "$( echo $HOME/.ansible/tmp/ansible-tmp-1456211300.33-102944509036293 )" && echo "$( echo $HOME/.ansible/tmp/ansible-tmp-1456211300.33-102944509036293 )" )'
fatal: [188.226.213.77]: UNREACHABLE! => {"changed": false, "msg": "ERROR! SSH encountered an unknown error. The output was:\nOpenSSH_6.9p1, LibreSSL 2.1.8\r\ndebug1: Reading configuration data /etc/ssh/ssh_config\r\ndebug1: /etc/ssh/ssh_config line 21: Applying options for *\r\ndebug1: auto-mux: Trying existing master\r\ndebug1: Control socket \"/Users/aitor/.ansible/cp/ansible-ssh-188.226.213.77-22-admin\" does not exist\r\ndebug2: ssh_connect: needpriv 0\r\ndebug1: Connecting to 188.226.213.77 [188.226.213.77] port 22.\r\ndebug2: fd 3 setting O_NONBLOCK\r\ndebug1: fd 3 clearing O_NONBLOCK\r\ndebug1: Connection established.\r\ndebug3: timeout: 9956 ms remain after connect\r\ndebug1: identity file /Users/aitor/.ssh/id_rsa type 1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /Users/aitor/.ssh/id_rsa-cert type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /Users/aitor/.ssh/id_dsa type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /Users/aitor/.ssh/id_dsa-cert type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /Users/aitor/.ssh/id_ecdsa type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /Users/aitor/.ssh/id_ecdsa-cert type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /Users/aitor/.ssh/id_ed25519 type -1\r\ndebug1: key_load_public: No such file or directory\r\ndebug1: identity file /Users/aitor/.ssh/id_ed25519-cert type -1\r\ndebug1: Enabling compatibility mode for protocol 2.0\r\ndebug1: Local version string SSH-2.0-OpenSSH_6.9\r\ndebug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.6\r\ndebug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.6 pat OpenSSH_6.6.1* compat 0x04000000\r\ndebug2: fd 3 setting O_NONBLOCK\r\ndebug1: Authenticating to 188.226.213.77:22 as 'admin'\r\ndebug3: hostkeys_foreach: reading file \"/Users/aitor/.ssh/known_hosts\"\r\ndebug3: record_hostkey: found key type ECDSA in file /Users/aitor/.ssh/known_hosts:1\r\ndebug3: load_hostkeys: loaded 1 keys from 188.226.213.77\r\ndebug3: order_hostkeyalgs: prefer hostkeyalgs: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521\r\ndebug1: SSH2_MSG_KEXINIT sent\r\ndebug1: SSH2_MSG_KEXINIT received\r\ndebug2: kex_parse_kexinit: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1\r\ndebug2: kex_parse_kexinit: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-dss-cert-v00@openssh.com,ssh-ed25519,ssh-rsa,ssh-dss\r\ndebug2: kex_parse_kexinit: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se\r\ndebug2: kex_parse_kexinit: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se\r\ndebug2: kex_parse_kexinit: 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,hmac-md5-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96\r\ndebug2: kex_parse_kexinit: 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,hmac-md5-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96\r\ndebug2: kex_parse_kexinit: zlib@openssh.com,zlib,none\r\ndebug2: kex_parse_kexinit: zlib@openssh.com,zlib,none\r\ndebug2: kex_parse_kexinit: \r\ndebug2: kex_parse_kexinit: \r\ndebug2: kex_parse_kexinit: first_kex_follows 0 \r\ndebug2: kex_parse_kexinit: reserved 0 \r\ndebug2: kex_parse_kexinit: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1\r\ndebug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519\r\ndebug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se\r\ndebug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se\r\ndebug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96\r\ndebug2: kex_parse_kexinit: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96\r\ndebug2: kex_parse_kexinit: none,zlib@openssh.com\r\ndebug2: kex_parse_kexinit: none,zlib@openssh.com\r\ndebug2: kex_parse_kexinit: \r\ndebug2: kex_parse_kexinit: \r\ndebug2: kex_parse_kexinit: first_kex_follows 0 \r\ndebug2: kex_parse_kexinit: reserved 0 \r\ndebug1: kex: server->client chacha20-poly1305@openssh.com <implicit> zlib@openssh.com\r\ndebug1: kex: client->server chacha20-poly1305@openssh.com <implicit> zlib@openssh.com\r\ndebug1: expecting SSH2_MSG_KEX_ECDH_REPLY\r\ndebug1: Server host key: ecdsa-sha2-nistp256 SHA256:6p0MGLnUq13lsJqyhGvIcBGowH8oXxhaDeH9rN0D2G4\r\ndebug3: hostkeys_foreach: reading file \"/Users/aitor/.ssh/known_hosts\"\r\ndebug3: record_hostkey: found key type ECDSA in file /Users/aitor/.ssh/known_hosts:1\r\ndebug3: load_hostkeys: loaded 1 keys from 188.226.213.77\r\ndebug1: Host '188.226.213.77' is known and matches the ECDSA host key.\r\ndebug1: Found key in /Users/aitor/.ssh/known_hosts:1\r\ndebug2: set_newkeys: mode 1\r\ndebug1: SSH2_MSG_NEWKEYS sent\r\ndebug1: expecting SSH2_MSG_NEWKEYS\r\ndebug2: set_newkeys: mode 0\r\ndebug1: SSH2_MSG_NEWKEYS received\r\ndebug1: Roaming not allowed by server\r\ndebug1: SSH2_MSG_SERVICE_REQUEST sent\r\ndebug2: service_accept: ssh-userauth\r\ndebug1: SSH2_MSG_SERVICE_ACCEPT received\r\ndebug2: key: /Users/aitor/.ssh/id_rsa (0x7ff011714430),\r\ndebug2: key: /Users/aitor/.ssh/id_dsa (0x0),\r\ndebug2: key: /Users/aitor/.ssh/id_ecdsa (0x0),\r\ndebug2: key: /Users/aitor/.ssh/id_ed25519 (0x0),\r\ndebug1: Authentications that can continue: publickey,password\r\ndebug3: start over, passed a different list publickey,password\r\ndebug3: preferred gssapi-with-mic,gssapi-keyex,hostbased,publickey\r\ndebug3: authmethod_lookup publickey\r\ndebug3: remaining preferred: ,gssapi-keyex,hostbased,publickey\r\ndebug3: authmethod_is_enabled publickey\r\ndebug1: Next authentication method: publickey\r\ndebug1: Offering RSA public key: /Users/aitor/.ssh/id_rsa\r\ndebug3: send_pubkey_test\r\ndebug2: we sent a publickey packet, wait for reply\r\ndebug1: Authentications that can continue: publickey,password\r\ndebug1: Trying private key: /Users/aitor/.ssh/id_dsa\r\ndebug3: no such identity: /Users/aitor/.ssh/id_dsa: No such file or directory\r\ndebug1: Trying private key: /Users/aitor/.ssh/id_ecdsa\r\ndebug3: no such identity: /Users/aitor/.ssh/id_ecdsa: No such file or directory\r\ndebug1: Trying private key: /Users/aitor/.ssh/id_ed25519\r\ndebug3: no such identity: /Users/aitor/.ssh/id_ed25519: No such file or directory\r\ndebug2: we did not send a packet, disable method\r\ndebug1: No more authentication methods to try.\r\nPermission denied (publickey,password).\r\n", "unreachable": true}