On Apr 28, 2025, at 12:00 PM, Omer Shapira via Wireshark-dev 
<wireshark-dev@wireshark.org> wrote:

> Darwin PEBs (DPEBs) do not contain any timing information, and does not 
> pretend to reflect the scheduler state machine. Rather, the DPEBs only 
> contain the description of processes, and the order in which DPEBs appear in 
> pcapng is dictated by the order of the “first appearance” of a particular 
> process in the EPB.
> 
> In other words, the Darwin tcpdump will only inject a DPEB when it sees a 
> packet, which is associated with a process that has not been observed before.

I.e., they're misnamed - they're not Darwin Packet Event Blocks, they're Darwin 
Packet *Information* Blocks or Darwin Packet *Description* blocks or something 
such as that.
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