Flaky test- dhcp notify test_sends_notification_over_socket_for_processing

testtools.testresult.real._StringException: testtools.testresult.real._StringException: Seeds: {{{MAAS_RAND_SEED=14438d57229b5d6c PYTHONHASHSEED=2205918689}}}
Twisted logs: {{{<class 'provisioningserver.rackdservices.lease_socket_service.LeaseSocketService'> starting on '/tmp/tmpucymwfgc/dhcpd.sock'Starting protocol <provisioningserver.rackdservices.lease_socket_service.LeaseSocketService object at 0x7f0b52c84670>(Port '/tmp/tmpucymwfgc/dhcpd.sock' Closed)Stopping protocol <provisioningserver.rackdservices.lease_socket_service.LeaseSocketService object at 0x7f0b52c84670>}}}
twisted-log: {{{2023-05-11 11:09:58+0000 [-] Main loop terminated.}}}

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1660, in _inlineCallbacks
    result = current_context.run(gen.send, result)
  File "/run/build/checkout/src/provisioningserver/dhcp/tests/test_helper_notify.py", line 84, in test_sends_notification_over_socket_for_processing
    self.assertEqual(1, len(done.value[0]["updates"]))
  File "/usr/lib/python3.10/unittest/case.py", line 845, in assertEqual
    assertion_func(first, second, msg=msg)
  File "/usr/lib/python3.10/unittest/case.py", line 838, in _baseAssertEqual
    raise self.failureException(msg)
AssertionError: 1 != 0

flaky test hit in http://maas-ci.internal:8080/job/maas-tester/2524/testReport/provisioningserver.dhcp.tests.test_helper_notify/TestDHCPNotify/test_sends_notification_over_socket_for_processing/