Guy Harris <[email protected]> wrote:
    > For values < 301 not documented here, we should probably fill them in,
    > even if it's only with "Reserved for XXX".

If we don't know what XXX is, then the default in the IANA registry will, I
think, be unallocated.  52 thru 98, 110/111 are the only gaps I can see.
Maybe 52->98 were skipped to avoid needless conflict with DLT_ values?

    >> Section 2.2.2, paragraph 0
    >> >    When processing a request for a Specification Required allocation 
the
    >> >    Designated Experts are expected to be able to find the relevant
    >> >    specification at a clearly stable URL.  It is noted that many
    >> >    enterprise web sites do not maintain URLs over a long period of 
time,
    >> >    and a document in a "wp-uploaded" section is highly likely to
    >> >    disappear.  In addition, specifications that require a reader to
    >> >    click through any kind of marketing or legal agreement are not
    >> >    considered public.
    >>
    >> What is "wp-uploaded section"?

    > I *think* it's a directory name used by some content management software. 
 Michael?

Yes.
Wordpress is quite common on many web properties.  It puts files in a diretory
"wp-uploaded" when things are uploaded.  The URL is stable for a short period
of time: Until the new hire in marketing deletes everything and re-organizes
it without caring for history.
Designated Experts are cautioned that URLs of that form are not stable.
Googling for "wp-uploaded" gets you pages and pages of explanation.

    >> Section 2.2.2, paragraph 2
    >> >    LinkTypes may be allocated for specifications not publicly available
    >> >    may be made within the FCFS range.  This includes specifications 
that
    >> >    might be classified.  The minimal requirement is to provide a 
contact
    >> >    person for that link type.
    >>
    >> What does it mean for a specification to be classified? Classified by 
whom?

    > I'm guessing it means "classified" in the "government document
    > classified as to how secret it is" sense:

    > https://en.wikipedia.org/wiki/Classified_information

Should NSA or FAPSI/FSB or Chinese MSS want to allocate a linktype and not
say what the contents are, that's fine for FSFC.  Not ideal, but not our place
to get in their way.  **Better they allocate a number than squat on one**

    > Changed to

    >> There is often an associated Data Link Type (DLT) value which is often 
identical in value,
    >> but not universally so. DLT values are associated with specific 
operating systems, and
    >> the numerical values for some of them are operating system specific, and 
are thus not
    >> subject to standardization.

    > in the Editor's Copy, as that better reflects the history there.

    > (History: the BPF capture mechanism code from LBL originally defined
    > some DLT_ values, the first few of which corresponded to ARP hardware
    > types.  More were added over time, and some of them of them were added
    > by various *BSDs that had picked up BPF. Unfortunately, they didn't
    > always coordinate with one another, and sometimes assigned different
    > numbers to the same DLT_ value, which caused real-world problems trying
    > to read some captures from FooBSD on BarBSD.  The first fix attempted
    > was to renumber the DLT_ values, but I think that may not have caught
    > on due to binary-compatibility reasons, so I came up with the LINKTYPE_
    > values, which normally had the same numerical value as the
    > corresponding DLT_, but, for cases where the corresponding DLT_ had
    > different values on different OSes, I assigned a *new* value for the
    > LINKTYPE_, and mapped between the DLT_ values used in the libpcap APIs
    > and the LINKTYPE_ values used in capture files.)

If only we'd done this IANA registry back in 1995 ;-)





--
Michael Richardson <[email protected]>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide




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