On Sep 1, 2021, at 1:33 PM, Ariel Burbaickij <ariel.burbaic...@gmail.com> wrote:

> thank you very much for your detailed explanations. RIght now OpenBSD is 
> nowhere in the chain but there are some scenarios plausible where it might 
> become part of it. So, if somebody is going to update the Developers' Guide 
> with how user_dlt/wtap_encap for dissector purposes is handled, then why part 
> of it should include the explanations you provided, I reckon.

The only Wireshark developers who have to know or care about LINKTYPEs are:

        people adding support for a new LINKTYPE value in the pcap and pcapng 
reading/writing code;

        people adding support for that new value in the pcap and pcapng file 
dissectors and in dissectors for protocols that send LINKTYPES over the wire, 
such as the recap protocol.

People adding *dissector* support for a new WTAP_ENCAP do not need to know 
about it, other than "don't use the LINKTYPE numerical value when registering 
in the wtap_encap dissector table".

None of those people need to know the history of why there are separate 
LINKTYPEs and DLTs.
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