[xcp] Embedding XCP signalling in IP header

[Marko Zec]

Here's just a thought - perhaps XCP signalling could be embedded directly into 
the IP header, by reusing the existing fragmentation fields?  The obvious 
benefit from such a scheme would be transparent compatibility with existing 
TCP implementations, which could make quite a difference for any real-world 
deployment scenario.

http://tel.fer.hr/zec/xcp-hdr-encoding.txt

Would this make any sense?

Marko