There is a typo in maasserver/api/ip_addresses.py:_claim_ip where get_or_create is called incorrectly.
File "/usr/lib/python3/dist-packages/maasserver/api/support.py", line 261, in dispatch
return function(self, request, *args, **kwargs)
File "/usr/lib/python3/dist-packages/maasserver/api/ip_addresses.py", line 179, in reserve
hostname=hostname)
File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 500, in call_within_transaction
return func_within_txn(*args, **kwargs)
File "/usr/lib/python3.5/contextlib.py", line 30, in inner
return func(*args, **kwds)
File "/usr/lib/python3/dist-packages/maasserver/api/ip_addresses.py", line 121, in _claim_ip
dnsrr.ip_addresses.add(sip)
AttributeError: 'tuple' object has no attribute 'ip_addresses'
Right above that should be: dnsrr, _ = DNSResource..., not dnsrr =
This shows up if the API user attempts to reserve an IP and attach it to a name in one step:
maas session ipaddresses reserve ip_address=
The workaround:
maas session ipaddresses reserve ip_address=
maas session dnsresources create fqdn=test.maas ip_addresses=