Re: [dnsext] errata on RFC1034 for recursive aliasing and name based diffrentiation

[John Levine <[e-mail]>]

>Instead of having a CNAME:
>
>alias.example.com   CNAME  real.example.com.
>real.example.com    TXT "This is real data, maintained in a single location."

>have a *zone cut*

You don't have to do anything that complicated.  Just copy the records
from the target to the address of the CNAME.

>       zone alias.example.com { master; file="czone-data.example.com";};
>       zone real.example.com { master; file="czone-data.example.com";};

And keep in mind that not every DNS server uses BIND format control
statements or zone files.

In any event, this is not a new idea.  We all know that in principle,
anything you can do with B/C/DNAME you could do with sufficiently
disciplined server management.

This confirms my impression that if we're going to do any of this
stuff, it's only useful as part of a system where applications can use
the info in the DNS to auto-provision and make names equivalent at the
application level.

R's,
John