It is set when the packet is received.  All Timestamp annotations are 
local to the machine, unless you do some magic to set them another way.

Eddie


Nicola Arnoldi wrote:
> Dear all,
> I have another challenging question for you.
> I am willing to use the TimestampAccum element contained in the analysis
> package.
> Documentation says that it works with timestamps.
> I looked into the code and I learnt the following:
> -> FromDevice grabs this timestamp and sets a packet annotation
> -> TimestampAccum works with this annotation.
> 
> Now the questions:
> - What timestamp is it? 
> - Who sets that timestamp and where?
> 
> I mean, it seems not an IP timestamp. I was wondering if the timestamp
> is set before packet transmission or at the time it is received.
> 
> Thanks
> 
> Nicola
> 
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