I figured out the problem. At the bottom of the default config it has: GSSAPIAuthentication yes so it overrides the default value. This should be with the commented default so that it is clear that it is being overridden.
-- GSSAPIAuthentication enabled by default contrary to /etc/ssh/ssh_config implication https://bugs.launchpad.net/bugs/383710 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openssh in ubuntu. -- 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