On Aug 8, 2009, at 8:34 PM, Dino Farinacci wrote:
The spec says ETRs MUST ignore the UDP checksum field. This is what
the LISP authors intended and has been implemented this way.
The spec says ITRs MUST set the UDP checksum field to 0.
Could you tell us how to achieve this on commonly deployed desktop
software/hardware that has two properties:
We don't want this rule on commonly deployed desktop hosts.
Dino
- There is no means to turn off the checking of UDP checksums. They
will be checked if they are non-zero in IPv4, and they will be
checked in all cases in IPv6 with zero always being considered
invalid.
- Networking Interface Cards that automatically calculate TCP/UDP
checksums on transmission if a checksum of zero is sent to the card.
Systems with these properties are far more widely deployed than LAG/
ECMP routers, and they are no easier/quicker to update.
Margaret
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