[rrg] Fundamental objections to ahost-basedscalableroutingsolution

[Tony Li]

|I don't see why we can't enforce anti-spoofing on encap, since it
|requires a mapping to be in place.  And we can on decap easily 
|where the
|traffic is symetrical (that is there is a mapping for the source
|RLOC/EID pair.


Ok, but what about asymmetric decap?  That implies that the ETR does a
mapping lookup on the receipt of a packet, buffers the packet until the
lookup succeeds, and the does the compare.  This seems like another fine way
of DoSing the ETR.

Tony