[At-Large] [IDN-WG] The New gTLD Progam in CLASS IN is no more a swindle

Lutz Donnerhacke lutz at iks-jena.de
Wed Jan 11 17:47:26 UTC 2012

On Wed, Jan 11, 2012 at 12:07:20PM -0500, Avri Doria wrote:
> - wouldn't he be looking for support of these new Classes in addition
>   to Class IN, not instead?

Then he has to change the basic assumption of RFC 1034 first:

  The database for any class is organized, delegated, and maintained
  separately from all other classes. Since, by convention, the name spaces
  are the same for all classes, the separate classes can be thought of as an
  array of parallel namespace trees. [...]
  Within a class, "cuts" in the name space can be made between any two
  adjacent nodes.  After all cuts are made, each group of connected name
  space is a separate zone.  The zone is said to be authoritative for all
  names in the connected region.  Note that the "cuts" in the name space
  may be in different places for different classes, the name servers may
  be different, etc.

> - doesn't this break because DNS Alias records pay no attention to Class
>   and therefore aliased names would collide despite being in different
>   classes?

CNAME processing is defined within a the same class as the queried class. In
this way it's class independent, simply it's part of the algorithm, not part
of the retured data. Same goes for NS, DS, etc.

Because the databases are requried to be separate, a CNAME in one class
can't influence an other one.

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