Hi,

we use USB-C Docks too, but we have only Dell Docks/Notebooks.
The Dell Notebooks have a build in Passthrough MAC which will be used if a
Dell USB-C-Dock is connected to the Notebook.
The Mac Adress is build into the BIOS.

Lenovo has a similar feature:
https://support.lenovo.com/de/de/solutions/ht503574

Greetings
Tobias



2017-11-27 23:17 GMT+01:00 Jason 'XenoPhage' Frisvold via PacketFence-users
<[email protected]>:

> On 11/24/17 06:13, Jes Kasper Klittum via PacketFence-users wrote:
> > Hey guys,
> >
> > I have a case running with Inverse, but just wanted to check if anyone
> > else has gotten around this problem.
> >
> > We have started using USB-C docks for some of our Lenovo ThinkPads and
> > are getting into issues based on the fact that the docks have their own
> > ethernet card, and thus their own MAC address.
>
> This is one of the problems with MAB.  I'm not sure there is a
> workaround short of clearing the registration rapidly after a device is
> disconnected.  And it may be very difficult to detect that if the port
> stays up when the computer is disconnected.  802.1x would help in this
> situation, if that's something you can deploy.
>
> --
> ---------------------------
> Jason 'XenoPhage' Frisvold
> [email protected]
> ---------------------------
>
> "A common mistake that people make when trying to design something
> completely foolproof is to underestimate the ingenuity of complete
> fools."
> - The Hitchhikers Guide to the Galaxy
>
>
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