Hi Dino.
We also need to consider the possibility that a packet will be
received by a different LISP node than the one for which it was
intended, or that it will arrive at the correct LISP destination
with the wrong source address in the external header. What happens
in those cases?
This doesn't happen since the outer IP header is checksum.
Not if the outer header is IPv6, as the IPv6 header does not include a
header checksum. This is why it is more important in IPv6 for the UDP
header to have a checksum that includes the IP pseudo header checksum.
If you have been missing this point, it is no wonder that you did not
understand my concerns about simply setting the UDP checksum to zero.
Margaret
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