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7.3.3.7. Device naming order changes randomly after rebooting
This is due to the fact that Udev, by design, handles uevents and loads modules in parallel, and thus in an unpredictable order. This will never be “fixed”. You should not rely upon the kernel device names being stable. Instead, create your own rules that make symlinks with stable names based on some stable attributes of the device, such as a serial number or the output of various *_id utilities installed by Udev. See Section 7.4, “Managing Devices” and Section 7.5, “General Network Configuration” for examples.
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