Ubuntu 14.04 - BUG? Ошибка входа в SSH [дубликат]

Ubuntu 14.04 - установлен apt-get install openssh-server, имя пользователя - солнце, а пароль - 1234, а root также имеет пароль 1234.

Удаленное подключение и отказ от меня.

suns-MacBook-Air:js sun$ ssh sun@192.168.1.6
sun@192.168.1.6's password: 
Permission denied, please try again.
sun@192.168.1.6's password: 
Permission denied, please try again.
sun@192.168.1.6's password: 
Permission denied (publickey,password).

suns-MacBook-Air:js sun$ ssh sun@192.168.1.6
sun@192.168.1.6's password: 
Permission denied, please try again.
sun@192.168.1.6's password: 
Permission denied, please try again.
sun@192.168.1.6's password: 

suns-MacBook-Air:js sun$ ssh root@192.168.1.6
root@192.168.1.6's password: 
Permission denied, please try again.
root@192.168.1.6's password: 
Permission denied, please try again.
root@192.168.1.6's password: 

EDIT: ПК использует ipv4 и ipv6

$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether d4:be:d9:fd:84:fe brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.6/24 brd 192.168.1.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 2a02:a03f:24af:bd00:898f:6294:6b5e:94f6/64 scope global temporary dynamic 
       valid_lft 345642sec preferred_lft 85306sec
    inet6 2a02:a03f:24af:bd00:d6be:d9ff:fefd:84fe/64 scope global dynamic 
       valid_lft 345642sec preferred_lft 345642sec
    inet6 fe80::d6be:d9ff:fefd:84fe/64 scope link 
       valid_lft forever preferred_lft forever
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether 1c:3e:84:01:bf:86 brd ff:ff:ff:ff:ff:ff