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Looking at the original bug (1685804) I see that two of the 4 patches
can be omitted, it was never confirmed one actually improved the host
name lookup while the other is purely an improvement in the text of
the error message issued on host name lookup failure.
However, one of the two remaining patches is fairly large so it might
not be ok for z-stream.
OTOH the risk is low since the change is already included in RHEL-7.7
and there aren't many users of the amd format map support.
For my part I think the change is sound, is low risk, and recommend
going ahead with the z-stream update.
On Aug 6, 2020 Red Hat Enterprise Linux 7 entered Maintenance Support 2 Phase.
https://access.redhat.com/support/policy/updates/errata#Maintenance_Support_2_Phase
That means only "Critical and Important Security errata advisories (RHSAs) and Urgent Priority Bug Fix errata advisories (RHBAs) may be released". This BZ does not appear to meet Maintenance Support 2 Phase criteria so is being closed WONTFIX. If this is critical for your environment please open a case in the Red Hat Customer Portal, https://access.redhat.com ,provide a thorough business justification and ask that the BZ be re-opened for consideration in a future erratum.