Thanks for the log. Unfortunately I can't easily experiment with how to configure ssh to turn this off. But even though I can't directly help you configure it, I think this is a configuration issue based on not understanding exactly how the configuration options map to the ssh protocol, rather than a bug.
I'm bumping the priority down to Medium since this is a less common, non-default configuration of ssh that has the issue. It might be worth asking the community for pointers, for example on askubuntu.com or upstream. There's a more complete list of how to get help here: http://www.ubuntu.com/support/community ** Changed in: openssh (Ubuntu) Importance: Critical => Medium -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/1052707 Title: ssh client ignores PasswordAuthentication no To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1052707/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs