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    config is delivered in the base ubuntu image to support dhcp on any
    additional interfaces which get attached by a customer at some point
    after initial boot. Since the Azure datasource can now regenerate
    network configuration as metadata reports these new devices, we no longer
    want the udev rules or netplan's 90-hotplug-azure.yaml to configure
    networking on eth1 or greater as it might collide with cloud-init's
    configuration.

    Remove the any existing extended network scripts if the datasource is
    enabled to write network per-boot.
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