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Re: Lookup zip by IP address [message #172942 is a reply to message #172941] Sat, 12 March 2011 16:59 Go to previous messageGo to previous message
The Natural Philosoph is currently offline  The Natural Philosoph
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Registered: September 2010
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Bill B wrote:
> On 3/12/2011 10:02 AM, Jerry Stuckle wrote:
>> On 3/12/2011 9:16 AM, Roy Smith wrote:
>>> In article<ilfs0n$3ga$1(at)news(dot)eternal-september(dot)org>,
>>> Jerry Stuckle<jstucklex(at)attglobal(dot)net> wrote:
>>>
>>>> For the record, IPv4 and IPv6 refer ONLY to the number of bytes in the
>>>> IP address. They have NOTHING to do with the protocol itself
>>>
>>> Actually, IPv4 and IPv6 *are* completely different (although related)
>>> protocols. For sure, the most obvious difference between them is the
>>> length of the addresses, but there are other differences as well. The
>>> header formats are different, and there are fundamental differences in
>>> how they deal with options, routing, MTU, traffic flows, etc. Wikipedia
>>> does a decent job comparing the two
>>> (http://en.wikipedia.org/wiki/Ipv6#Comparison_to_IPv4).
>>>
>>
>> Of course there have to be minor differences in the headers to identify
>> whether they're using IPv4 or IPv6. And there have been some minor
>> changes with the routing, etc - but those could easily have been
>> implemented in IPv4, also. They just weren't.
>>
>>>> IPv4 was heavily used by Arpanet back in the 1960's - which would
>>>> have been VERY hard to do if it hadn't been invented until 1981.
>>>
>>> To the best of my knowledge, the first RFC describing what we now call
>>> IPv4 was RFC 760, published in January 1980. This was updated by RFC
>>> 791, published in September 1981. I'm not sure when the first
>>> experimental versions were deployed, but it's absurd to say that IPv4
>>> was in use (heavy or otherwise) in the 1960s.
>>>
>>
>> Then what was I using in the early 70's while in college? And what was I
>> working on in the late 70's when I worked for IBM?
>>

Something that probably wasn't strictly what we understand IP to be..
PSN = packet switched networking as a way to use multiple redundant
routes, and to do stat muxing over smaller channeles, was developed as a
concept in the 60's.

And people soon realised that this made a global internetworking
thingy.. possible. Though 'The Internet' was a long way of as a term or
a reality.


This is a reasonable sumary

http://www.isoc.org/internet/history/brief.shtml

As such, TCP actually precedes IP by some time

"One of the more interesting challenges was the transition of the
ARPANET host protocol from NCP to TCP/IP as of January 1, 1983. This was
a "flag-day" style transition, requiring all hosts to convert
simultaneously or be left having to communicate via rather ad-hoc
mechanisms. This transition was carefully planned within the community
over several years before it actually took place and went surprisingly
smoothly (but resulted in a distribution of buttons saying "I survived
the TCP/IP transition").

TCP/IP was adopted as a defense standard three years earlier in 1980.
This enabled defense to begin sharing in the DARPA Internet technology
base and led directly to the eventual partitioning of the military and
non- military communities. By 1983, ARPANET was being used by a
significant number of defense R&D and operational organizations. The
transition of ARPANET from NCP to TCP/IP permitted it to be split into a
MILNET supporting operational requirements and an ARPANET supporting
research needs.

Thus, by 1985, Internet was already well established as a technology
supporting a broad community of researchers and developers, and was
beginning to be used by other communities for daily computer
communications. Electronic mail was being used broadly across several
communities, often with different systems, but interconnection between
different mail systems was demonstrating the utility of broad based
electronic communications between people."



>> Arpanet used TCP/IP, and was in existence in the 60's. And it used 4
>> byte addresses.

No... see above. That wasn't TCP/IP.

>>
>> RFC's came about LONG after Arpanet was developed.
>>

As did TCP/IP

>>>> I never hear anyone (except you) use IP to refer to an address.
>>>> Everyone else uses the term "ip address" - which is correct.
>>>
>>> People often say "IP" when they mean "IP address" in casual
>>> conversation. "I can't reach foo.com, can you try pinging it?". "OK,
>>> what's the IP?" It's sloppy, but lots of casual conversation is sloppy,
>>> and people figure out the meaning from context.
>>
>> Yes, casual conversations, I agree. But not like "Pointed Head"
>> indicated.
>
> Mr. Stuckle, you can make your point without belittling yourself and
> others.
>

No, he can't.

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