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[Aman Kumar Sinha <1894837@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I am using cloud-init v19.1 where I am passing config drive from nova layer while VM deployment.
On a RHEL8 environment, I am observing IPv4 interfaces not coming up. We are setting NM_CONTROLLED = no in the interface files and since RHEL8 recommends to use NetworkManager to configure network and create connectivity it is failing.
we are setting NM_CONTROLLED = no using the code
    iface_defaults = tuple([
        ('ONBOOT', True),
        ('USERCTL', False),
        ('NM_CONTROLLED', False),
        ('BOOTPROTO', 'none'),
        ('STARTMODE', 'auto'),
    ])

under the file [1] . Due to which the Network Manager is not able to
handle the interfaces

[1] cloudinit/net/sysconfig.py


Making ('NM_CONTROLLED', True) fixes the issue.

** Affects: cloud-init
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1894837

Title:
  RHEL8 ipv4 IPs not getting set

Status in cloud-init:
  New

Bug description:
  I am using cloud-init v19.1 where I am passing config drive from nova layer while VM deployment.
  On a RHEL8 environment, I am observing IPv4 interfaces not coming up. We are setting NM_CONTROLLED = no in the interface files and since RHEL8 recommends to use NetworkManager to configure network and create connectivity it is failing.
  we are setting NM_CONTROLLED = no using the code
      iface_defaults = tuple([
          ('ONBOOT', True),
          ('USERCTL', False),
          ('NM_CONTROLLED', False),
          ('BOOTPROTO', 'none'),
          ('STARTMODE', 'auto'),
      ])

  under the file [1] . Due to which the Network Manager is not able to
  handle the interfaces

  [1] cloudinit/net/sysconfig.py


  
  Making ('NM_CONTROLLED', True) fixes the issue.

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