The problem was, that the content of one hostsubnet file was written to other hostsubnet files, so all were the same. I have checked 2 different hostsubnet files in archive, and both did have matching data.
VERIFIED on 4.5.0-0.ci-2021-01-11-225944
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (OpenShift Container Platform 4.5.27 bug fix update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.