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Description of problem:

cloud-init 18.2 in RHEL 7.6 is overwriting contents of /etc/sysconfig/network file. If there are any custom settings applied through kickstart file, they get overwritten. 

There was already a bugzilla report about it and it was fixed upstream:

https://bugzilla.redhat.com/show_bug.cgi?id=1558641

This is the actual patch applied:
https://src.fedoraproject.org/rpms/cloud-init/blob/6164e0aea90ad262c00558a3a2366ad72e01daed/f/cloud-init-17.1-no-override-default-network.patch

However we don't see this change in the versions shipped with RHEL 7.6.



Version-Release number of selected component (if applicable):

- RHEL 7.6
- cloud-init-18.2-1.el7_6.1


Additional info:

Vesrion 0.7.9, shipped with RHEL 7.5, did not have this behavior

*** This bug has been marked as a duplicate of bug 1653131 ***