[xcp] Embedding XCP signalling in IP header

[Bob Braden]

  *> 
  *> On Aug 19, 2004, at 4:31 AM, Tim Shepard wrote:
  *> 
  *> > A separate header between IP and TCP with a new protocol number in the
  *> > IP header is unambiguous to anyone trying to debug why some middlebox
  *> > or endhost stack is not cooperating.
  *> 
  *> Agreed. However, it will face the same deployment issues that a new 
  *> transport protocol would, e.g., in firewalls.
  *> 
  *> --aaron
  *> 

Yup.  But if we gate all progress on firewalls or NATs, we might as
well all give up the protocol research business and start selling
flood insurance.

Bob

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