RE: [RRG] Re: Should the identifier be used as local locator

["Tony Li" <tony.li@tony.li>]

|2/ an engineering judgment call of whether one could borrow MAC address
|    to serve the above purpose.
|    (this is similar to the existing TCP design of borrowing IP
|     address as part of TCP's connection ID)
|
|2/ represents an engineering tradeoff because the borrowing saves the  
|trouble of managing another new ID space.


2/ also creates a significant security issue.  If a MAC address is visible
outside of the local subnet, then it implies that someone can track a host
as it migrates across the Internet.  That's been widely discussed during the
first iteration of GSE and pretty generally viewed as a Bad Idea.  At the
very least, there needs to be a mechanism to escape from the MAC address and
jump to a separately assigned space.  

Tony


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