A test has been failing intermittently recently. This is using the `nic_managed` factory:
https://github.com/theforeman/foreman/blob/6aac916fb183f47596e8d543756faac27750a21e/test/factories/host_related.rb#L80-L92

Critical line is that it tries to add an IP from a the subnet as a sequence. My theory is that we have enough tests that sometimes it creates an IP outside of the range. IP in question is `10.10.11.39` which is indeed outside of `10.10.10.0/24`. It somehow needs to take that into account. Probably with a modulo.