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* This datasource does not support OCI Classic. OCI Classic provides an EC2
lookalike metadata service.
* The UUID provided in DMI data is not the same as the meta-data provided
instance-id, but has an equivalent lifespan.
* We do need to support upgrade from an instance that cloud-init
identified as OpenStack.
* Bare metal instances use iSCSI root, virtual machine instances do not.
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OracleCloud.com.
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failover devices have the same MAC but need to be ignored.
Note: we rely on cloudinit.net changes which prevent netfailover devices
from being present in the provided network config. For more details about
netfailover devices, refer to cloudinit.net module.
:param network_config
A v1 or v2 network config dict with the primary NIC, and possibly
secondary nic configured. This dict will be mutated.
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(if the IMDS returns valid JSON with unexpected contents).
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`fetch_vnics_data` is True, else None
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