[rrg] [Int-area] Please respond: Questions from the IESG as towhether a WG forming BOF is necessary for LISP

[Joe Touch]

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Dino Farinacci wrote:
>> The approach in the current LISP draft still relies on ICMPs
>> coming from anonymous network middleboxes (which Dino himself
>> has said that we cannot depend on), and provides insufficient
> 
> I did not say that. I said you cannot depend on ICMP Unreachables. But
> ICMP TooBig and Time-Exceeded message are sent and are more dependable.
> That is, they can get lost when they are transmitted since they are
> single transmitted datagrams. But at least they are sent.

Can you clarify? ICMP unreachables are required sent, just as TooBigs
and Time-Exceededs. They're all blocked by various systems, including
NATs and firewalls, so none can be relied upon.

Joe
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