Conflict between "DNS zone name" in Cluster controller and "Default domain for new nodes" in settings

Running 1.2+bzr1360+dfsg-0ubuntu1~ppa1 on Precise

If MAAS manages DHCP and DNS, and under Cluster controller we leave the default DNS zone name to "master" and then in the settings panel, down under Network configuration we leave the default "local" for "Default domain for new nodes" we cannot use the constraint "maas-name=node.master" and an error is shown, example:

juju deploy --repository=. --config=openstack.yaml --constraints "maas-name=controller.master" local:precise/nova-cloud-controller

And then in /var/log/maas:
ERROR 2013-03-15 12:30:06,214 maas.maasserver ################################ Exception: No matching node is available. ################################
ERROR 2013-03-15 12:30:06,215 maas.maasserver Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/usr/lib/python2.7/dist-packages/django/views/decorators/vary.py", line 22, in inner_func
    response = func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/piston/resource.py", line 166, in __call__
    result = self.error_handler(e, request, meth, em_format)
  File "/usr/lib/python2.7/dist-packages/piston/resource.py", line 164, in __call__
    result = meth(request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/maasserver/api.py", line 308, in dispatch
    return function(self, request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/maasserver/api.py", line 945, in acquire
    raise NodesNotAvailable("No matching node is available.")
NodesNotAvailable: No matching node is available.

Even though controller.master CNAME is added to the maas zone file in bind.

I checked in the django models and the reason is that we use the "local" and not the "master" domain:

$ sudo maas shell
Python 2.7.3 (default, Aug 1 2012, 05:14:39)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from maasserver.models import Node
>>> Node.objects.all()[0].hostname
u'controller.local'
>>>

If we specify the constraint maas-name with the "local" domain then it works.

I'm not sure if this is expected or if it would be better to give preference to the DNS name set by the maas-dns config with bind.

Thanks.