The test test_integration/test_replica_promotion.py::TestHiddenReplicaPromotion::()::test_hidden_replica_install randomly fails in nightly_f29 (link).

The test is checking that a given IP address is not in the DNS records for the domain. When we are unlucky, we may come up with the following situation:
- IP address that is unexpected: 192.168.121.25
- IP address that is found for the DNS record: 192.168.121.254

As 192.168.121.25 is a substring of 192.168.121.254, the test wrongly considers that the unexpected address was found.
Extract of the log:

            for host in hosts_unexpected:
                value = host.hostname if rtype == 'SRV' else host.ip
>               assert value not in txt
E               AssertionError: assert '192.168.121.25' not in 'ipa-ca.ipa.test. 1 IN A 192.168.121.254'
E                 '192.168.121.25' is contained here:
E                   ipa-ca.ipa.test. 1 IN A 192.168.121.254
E                 ?                         ++++++++++++++