NACR version 7.0
Wed Jul 28 18:01:59 UTC 1993
I wrote that portion and I should have it clearer.
Sorry for causing the confusion. Some clarifications
> Date: Wed, 28 Jul 1993 19:27:57 +0200
> From: Piet.Beertema at mcsun.EU.net
> To: "Mark Knopper" <mak at merit.edu>
> CC: regional-techs at merit.edu
> (1) Class C Block Submission:
> It is allowed to submit a block of consecutive Class C addresses
> in a NACR.
> What about Class B blocks, unlikely though such
> an event may be?
This feature is not very useful for Class B as very few
sites own blocks of Class B. It is not allowed to avoid
confusion and to make it easier to detect typos.
> netnum: 198.4.65 - 198.4.79
> What would be allowed and not allowed here?
> For example:
> netnum: 126.96.36.199 - 188.8.131.52
> should be perfectly valid, given that trailing
> zero part may be stripped off. But are:
> netnum: 198.4.65-198.4.79
> netnum: 184.108.40.206-220.127.116.11
> valid too
All of the above are allowed. The rule is that:
o The "firstip" and "lastip" should be separated by
a "-" (plus zero or more white spaces).
o The trailing 0 (last octet) for the "firstip" or
"lastip" are optional.
o Also, the first two octets of "firstip" and "lastip"
have to be identical.
> Also note that your example is a trivial one.
> I assume/hope you can cope with "overflows":
> netnum: 198.4.90-198.5.10
Yes, such NACR's will be rejected by the parser.
-- Enke Chen
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