[ih] The history of "This" 0.0.0.0/8 network?

[touch at strayalpha.com (Joe Touch)]

https://www.ultratools.com/tools/rfcLookup

Search for 0.0.0.0

The value is used in several protocols in different ways.

But that doesn?t seem to be what?s been asked. I don?t know about it?s use in transitioning or historically.  You might search the IENs for that. 

Joe

> On Feb 11, 2019, at 11:31 PM, Andrew G. Malis <agmalis at gmail.com> wrote:
> 
> Dave,
> 
> The answer is in RFC 792, of course (the ICMP spec). In a quick scan, I see zero in the network field on page 19. It was a way for a host on a LAN to query its router to find out its network number.
> 
> Cheers,
> Andy
> 
> 
> 
>> On Mon, Feb 11, 2019 at 5:55 PM Dave Taht <dave at taht.net> wrote:
>> "Andrew G. Malis" <agmalis at gmail.com> writes:
>> 
>> > Dave,
>> >
>> > From RFC 791: "A value of zero in the network field means this
>> > network.".
>> 
>> 
>> A bit short, don't ya think? :) the full ref expounded with.
>> 
>> "This is only used in certain ICMP messages. "
>> 
>> Which ones?
>> 
>> 
>> Did the 0 mean that on a shared local lan, it was represented as 0 there,
>> and transmitted as something else elsewhere? Or vice versa?
>> 
>> 
>> >
>> > Cheers,
>> > Andy
>> >
>> > On Mon, Feb 11, 2019 at 3:37 PM Dave Taht <dave at taht.net> wrote:
>> >
>> >     Brian Carpenter just turned me onto this list. As part of an
>> >     upcoming
>> >     internet draft, I'd wanted to be able to coherently discuss the
>> >     origin
>> >     and original use cases of the "this" network "0" in Arpanet to
>> >     early
>> >     ipv4 transition days, and thus far I haven't found much
>> >     information on
>> >     it.
>> >     
>> >     I'm curious if there is a reference on it somewhere?
>> >     
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>> >     
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