classless delegation [Re: IP address fee??]

Brad Knowles brad.knowles at skynet.be
Fri Sep 6 14:56:09 UTC 2002


At 4:40 PM +0200 2002/09/06, Peter van Dijk wrote:

>  I am doing separate zone files. Each IP delegated to me is a separate
>  zone. Now, again, what is wrong with that?

	Technically, nothing -- at least, with the absolute latest 
authoritative nameservers and the absolute latest recursive/caching 
nameservers, and it doesn't seem to give much problems to modern 
resolver libraries.

	Procedurally, everything is wrong with it -- in part, because of 
the profusion of mis-configured authoritative and recursive/caching 
nameservers that exist on the Internet today (not to mention 
resolving libraries), the fact that most vendors today still ship 
vulnerable authoritative & recursive/caching nameservers with their 
OSes (and *no one* ships an OS that uses modern resolver libraries), 
and the fact that 99.999999% of the people on the 'net will take the 
default garbage that the vendor ships to them simply because they 
don't know any better.

>>  o The reverse zone contains one or more A records
>>      The reverse domain "192.122.109.193.in-addr.arpa." contains one
>>      or more A records.  A records should only be placed in
>>      forward-mapping domains.
>
>  What A-records is it talking about? I am not seeing any.

	They are the ones associated with your NS records.  At a 
procedural level, PTR records are mutually exclusive with SOA & NS 
records.

>  Indeed, you found some things wrong with the /24 zone, but that was
>  not the subject, and nothing you found wrong with the /24 is related
>  to the /29.

	See above.

-- 
Brad Knowles, <brad.knowles at skynet.be>

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
     -Benjamin Franklin, Historical Review of Pennsylvania.

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