Hi Magnus,
On 2012-10-09 22:43, Benoit Claise wrote:
Benoit Claise has entered the following ballot position for
draft-ietf-6man-udpzero-06: No Objection
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COMMENT:
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No objection to the publication of this document, but I really would
like to have the following points clarified.
- 2. Implementations MUST provide a way to signal the set of ports
that will be enabled to receive UDP datagrams with a zero
checksum.
What is an implementation? The application running over the tunnel? You
refer to "An encapsulating protocol" in the sentence before the bullet
points, is this what you mean?
For a tunnel protocol it is the tunnel protocol implementation that
needs either implicitly or explicitly indicate or signal that it will
use zero checksum for a particular flow or ports.
If yes, signal from where to whom?
Or maybe by "implementation" you mean "IPv6 protocol stack
implementation"
The protocol or implementation using zero checksum is the one that needs
to signal it. But from my perspective it can be dealt with implicitly in
some cases where static ports works.
Lets try to clarify that formulation.
I would like to see the new text proposal.
Because THE question behind my questions is: how is this requirement
fulfilled in draft-ietf-6man-udpchecksums-04?
Regards, Benoit.
- Section 3.1.2 Corruption of the source IP address
Please mention Unicast Reverse Path Forwarding, which might discard
packets.
Yes, we can add that as a existing cause for packets with erronous
source address to be dropped.
cheers
Magnus Westerlund
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Multimedia Technologies, Ericsson Research EAB/TVM
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