When you enter an endpoint that isn't running keystone, just sits there

Did a fairly simple "woops" while walking through install docs, where I put in the wrong IP address for the endpoint. It just sat there for a while until I cancelled the request. I think a more graceful error message "No Keystone server running at <IP address>" would help.

nova@ubuntu:~$ keystone --token 012345SECRET99TOKEN012345 --endpoint http://192.168.206.130:35357/v2.0 tenant-create --name openstackDemo --description "Default Tenant" --enabled true
^X
^CTraceback (most recent call last):
  File "/usr/bin/keystone", line 9, in <module>
    load_entry_point('python-keystoneclient==2012.1', 'console_scripts', 'keystone')()
  File "/usr/lib/python2.7/dist-packages/keystoneclient/shell.py", line 255, in main
    OpenStackIdentityShell().main(sys.argv[1:])
  File "/usr/lib/python2.7/dist-packages/keystoneclient/shell.py", line 215, in main
    args.func(self.cs, args)
  File "/usr/lib/python2.7/dist-packages/keystoneclient/v2_0/shell.py", line 114, in do_tenant_create
    enabled=args.enabled)
  File "/usr/lib/python2.7/dist-packages/keystoneclient/v2_0/tenants.py", line 72, in create
    return self._create('/tenants', params, "tenant")
  File "/usr/lib/python2.7/dist-packages/keystoneclient/base.py", line 82, in _create
    resp, body = self.api.post(url, body=body)
  File "/usr/lib/python2.7/dist-packages/keystoneclient/client.py", line 169, in post
    return self._cs_request(url, 'POST', **kwargs)
  File "/usr/lib/python2.7/dist-packages/keystoneclient/client.py", line 150, in _cs_request
    **kwargs)
  File "/usr/lib/python2.7/dist-packages/keystoneclient/client.py", line 115, in request
    **request_kwargs)
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1444, in request
    (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1196, in _request
    (response, content) = self._conn_request(conn, request_uri, method, body, headers)
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1170, in _conn_request
    conn.connect()
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 788, in connect
    self.sock.connect(sa)
  File "/usr/lib/python2.7/socket.py", line 224, in meth
    return getattr(self._sock,name)(*args)