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I think that means the timestamps come from computer timer, like CPU timer.
But in you last email, you said:

"The only way to obtain that is to have some device that timestamps packets
in hardware. And even in that case, most of the times the timestamps have
microsecond precision (this is what we have with the AirPcap adapters in
hardware)."

That sounds like, the AirPcap adapter has a timer build in it, and the
arrival packets timestamps come from this build in timer.

So I want to get the confirmation from you, whether the arrival packets are
timestamped by the computer timer or the AirPcap adapter build in timer.

Cheers

John

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Hi,<br>
<br>
I&#39;m a little bit confused about where exactly the arrival packets times=
tamps come from, in our first email, you said:<br><br><span style=3D"color:=
 rgb(51, 51, 255);">&quot;1. Where does the NPF get the time=20
  information to timestamp these incoming packet? The time information come=
s=20
  from a on board timer in the adapter or from a CPU or similar computer=20
  clock?</span>
  <div style=3D"color: rgb(51, 51, 255);">=A0</div>
<div style=3D"color: rgb(51, 51, 255);"><font size=3D"2">--GV--</font></div=
>
<div><font style=3D"color: rgb(51, 51, 255);" size=3D"2">From the computer =
clock when the packet gets delivered to=20
WinPcap.</font><span style=3D"color: rgb(51, 51, 255);">&quot;</span><br><b=
r><font color=3D"#000000">I think that means the timestamps come from compu=
ter timer, like CPU timer. But in you last email, you said:<br><br><span st=
yle=3D"color: rgb(51, 51, 255);">&quot;</span></font><font style=3D"color: =
rgb(51, 51, 255);"><font size=3D"2">The only way to obtain that is to have=
=20
some=A0device that timestamps packets in hardware. And even in that case,=
=20
most of the times the timestamps have microsecond precision (this is what w=
e=20
have with the AirPcap adapters in hardware).</font></font><font color=3D"#0=
00000"><span style=3D"color: rgb(51, 51, 255);">&quot;<br><br><span style=
=3D"color: rgb(0, 0, 0);">That sounds like, the AirPcap adapter has a timer=
 build in it, and the arrival packets timestamps come from this build in ti=
mer.<br>
<br>So I want to get the confirmation from you, whether the arrival packets=
 are timestamped by the computer timer or the AirPcap adapter build in time=
r.<br><br>Cheers<br><br>John<br></span></span></font></div>

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