maasserver.models.staticipaddress.MultipleObjectsReturned: get() returned more than one StaticIPAddress -- it returned 2!

Hello,

I have a strange problem while commissioning a node. The MAAS server thinks 50-maas-01-commissioning has failed, while cloud-init on the node indicates it's finished without any issues. The script's exit status is 0 (zero).

Our MAAS version is "3.3.4-13189-g.f88272d1e".

In the regiond.log, I found the following log.

2023-10-24 06:54:22 metadataserver.api: [critical] nodexx.maas(xxxxxx): commissioning script '50-maas-01-commissioning' failed during post-processing.
        Traceback (most recent call last):
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/api.py", line 860, in signal
            target_status = process(node, request, status)
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/api.py", line 682, in _process_commissioning
            self._store_results(
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/api.py", line 565, in _store_results
            script_result.store_result(
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/models/scriptresult.py", line 372, in store_result
            signal_status = try_or_log_event(
        --- <exception caught here> ---
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/api.py", line 483, in try_or_log_event
            func(*args, **kwargs)
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/builtin_scripts/hooks.py", line 1123, in process_lxd_results
            _process_lxd_resources(node, data)
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/builtin_scripts/hooks.py", line 636, in _process_lxd_resources
            network_devices = update_node_network_information(node, data, numa_nodes)
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/builtin_scripts/hooks.py", line 234, in update_node_network_information
            update_node_interfaces(node, data)
          File "/snap/maas/28521/lib/python3.10/site-packages/provisioningserver/utils/twisted.py", line 203, in wrapper
            result = func(*args, **kwargs)
          File "/snap/maas/28521/lib/python3.10/site-packages/maasserver/utils/orm.py", line 755, in call_within_transaction
            return func_within_txn(*args, **kwargs)
          File "/usr/lib/python3.10/contextlib.py", line 79, in inner
            return func(*args, **kwds)
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/builtin_scripts/network.py", line 116, in update_node_interfaces
            interface = update_interface(
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/builtin_scripts/network.py", line 195, in update_interface
            return update_physical_interface(
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/builtin_scripts/network.py", line 290, in update_physical_interface
            update_physical_links(node, interface, links, new_vlan, update_fields)
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/builtin_scripts/network.py", line 301, in update_physical_links
            update_ip_addresses = update_links(node, interface, links)
          File "/snap/maas/28521/lib/python3.10/site-packages/metadataserver/builtin_scripts/network.py", line 730, in update_links
            ip_address, created = StaticIPAddress.objects.update_or_create(
          File "/snap/maas/28521/usr/lib/python3/dist-packages/django/db/models/manager.py", line 85, in manager_method
            return getattr(self.get_queryset(), name)(*args, **kwargs)
          File "/snap/maas/28521/usr/lib/python3/dist-packages/django/db/models/query.py", line 608, in update_or_create
            obj, created = self.select_for_update().get_or_create(defaults, **kwargs)
          File "/snap/maas/28521/usr/lib/python3/dist-packages/django/db/models/query.py", line 581, in get_or_create
            return self.get(**kwargs), False
          File "/snap/maas/28521/usr/lib/python3/dist-packages/django/db/models/query.py", line 439, in get
            raise self.model.MultipleObjectsReturned(
        maasserver.models.staticipaddress.MultipleObjectsReturned: get() returned more than one StaticIPAddress -- it returned 2!

Could you help us fix the problem?