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At 9:37 AM +0200 6/23/00, Johan Solve wrote:
Re: Classless subnet reverse delegation
From: Men & Mice Support
Date: Friday, June 23, 2000
Time: 1:19:23 am
>> The host or domain "116.212.in-addr.arpa." does not exist
>> The host or domain "72.116.212.in-addr.arpa." does not exist
>>
>>As you can see from the last two lines, there is no delegation from
>>these servers to your ISP. Therefore, the delegation from your ISP
>>to you is not seen by the outside world.
>
>The delegation probably haven't propagated yet.
Let me take this opportunity to address the myth of propagation.
When you ask a server directly using a querying tool, rather than
simply asking your local resolver, the only propagation issue is of
secondary servers catching up to their primary.
In this case, I asked the primary server, ns.ripe.net. It doesn't
have any record of delegation for either of the above two names.
Therefore, the delegation hasn't been created. There's no propagation
issue at all. The job simply hasn't been done.
When it is done, as soon as the secondary servers update, there will
be no propagation issue. The rest of the Internet will go to the
source (the primary and secondary servers, listed in my previous
message) and find the information; there will be no delay.
There are only ever two issues of propagation: secondary server
updating and caching. When you change the registration for a domain,
the "propagation" of that change across the net takes several steps:
o The primary server for the parent domain is changed.
o The other servers for the parent domain update their zone files.
o The rest of the net eventually expires its cached data and finds
the new version.
It's that last step that can take awhile, especially since many TLD's
use 1 or 2 day TTL's on their delegation records, and since
rule-breaking proxy servers like AOL's cache things for as long as
they like.
Sorry for ranting, but misunderstanding of this issue causes all
kinds of confusion.
____________________________________________________________________
Chris Buxton cbuxton@menandmice.com
Men & Mice http://www.menandmice.com
Makers of: QuickDNS Pro
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