Re: [PATCH 1/3 v3] net: usb: r8152: Check used MAC passthrough address

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On Tue, 11 Jan 2022 08:57:39 -0600 Limonciello, Mario wrote:
> The important thing to remember is that many of these machines *don't*
> have in-built network controller and rely upon a USB-c network adapter.
> 
> I recall a few reasons.
> 
> 1) Consistency with the UEFI network stack and dual booting Windows when 
> using the machine.  IOW 1 DHCP lease to one network controller, not one OS.
> 
> 2) A (small) part of an onion that is network security.  It allows 
> administrators to allow-list or block-list controllers.
> 
> The example I recall hearing is someone has their laptop stolen and 
> notifies I/T.  I/T removes the MAC address of the pass through address
> from the allow-list and now that laptop can't use any hotel cubes for 
> accessing network resources.
> 
> 3) Resource planning and management of hoteling resources.
> 
> For example allow facilities to monitor whether users are reserving and 
> using the hoteling cubes they reserved.

Interesting, I haven't thought about use case (3).

Do you know how this is implemented on other platforms?



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