One thing missing in the current document is how to address the modern issue 
of MAC address randomization.

  i.e. admins would like to ensure that only certain devices access the 
network.  But with MAC address randomization, it's difficult to have a static 
device identifier.  Even client certificates can be installed on multiple 
machines, if they're just sent to the user.

  Would it be worth adding a note that systems SHOULD implement RFC 6677 
channel bindings to address this issue?  And that the Calling-Station-Id inside 
of the channel bindings MUST be the actual physical MAC, and not the public / 
randomized MAC?

  I've seen this problem more and more in customer deployments.  It's becoming 
a serious security issue.

  Alan DeKok.

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