This:
[root@wlgcloudcont1 openvswitch(keystone_admin)]# neutron port-update 8ebc0cc5-84bc-482d-b9b9-446f10eac8f3 --allowed-address-pairs type=dict mac_address='00:00:00:00:00:11',ip_address="10.2.115.100"
Request Failed: internal server error while processing your request.


Results in this:
2013-12-09 10:10:09.851 32501 ERROR neutron.api.v2.resource [-] update failed
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource Traceback (most recent call last):
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/resource.py", line 84, in resource
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource     result = method(request=request, **args)
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/base.py", line 460, in update
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource     allow_bulk=self._allow_bulk)
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/base.py", line 589, in prepare_request_body
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource     attr_vals['validate'][rule])
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/extensions/allowedaddresspairs.py", line 54, in _validate_allowed_address_pairs
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource     mac = address_pair.get('mac_address')
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource AttributeError: 'unicode' object has no attribute 'get'
2013-12-09 10:10:09.851 32501 TRACE neutron.api.v2.resource