Public bug reported:

Mysql workbench fails to connect through ssh with the following error:

10:14:04 [ERR][     SSH tunnel]: Authentication error opening SSH tunnel: 
Authentication error, unhandled exception caught in tunnel manager, please 
refer to logs for details
10:15:09 [INF][     SSH tunnel]: Existing SSH tunnel not found, opening new one
10:15:12 [INF][     SSH tunnel]: Opening SSH tunnel to localhost:2222
10:15:12 [ERR][   sshtunnel.py]: Traceback (most recent call last):
  File "/usr/share/mysql-workbench/sshtunnel.py", line 226, in _connect_ssh
    self._client.load_system_host_keys()
  File "/usr/local/lib/python2.7/dist-packages/paramiko/client.py", line 98, in 
load_system_host_keys
    self._system_host_keys.load(filename)
  File "/usr/local/lib/python2.7/dist-packages/paramiko/hostkeys.py", line 99, 
in load
    e = HostKeyEntry.from_line(line, lineno)
  File "/usr/local/lib/python2.7/dist-packages/paramiko/hostkeys.py", line 331, 
in from_line
    key = ECDSAKey(data=decodebytes(key), validate_point=False)
  File "/usr/local/lib/python2.7/dist-packages/paramiko/ecdsakey.py", line 70, 
in __init__
    validate_point=validate_point)
TypeError: from_string() got an unexpected keyword argument 'validate_point'
10:15:12 [ERR][     SSH tunnel]: Authentication error opening SSH tunnel: 
Authentication error, unhandled exception caught in tunnel manager, please 
refer to logs for details

I tried to connect to several machines both with password auth and
keyfile with the same result.  Connection without tunnel works.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: mysql-workbench 6.0.8+dfsg-2
ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed Mar 25 10:30:32 2015
InstallationDate: Installed on 2014-04-28 (330 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 
(20140416.2)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: mysql-workbench
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: mysql-workbench (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug gnome3-ppa third-party-packages trusty

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https://bugs.launchpad.net/bugs/1436238

Title:
  Can't connect through ssh

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