[dns-operations] about wildcard for CNAME

[yhpeng at orange.fr]

> The key here is that once you have any RR for a particular label, it
> overrides the wildcarded results for all RR types. As a result, CNAMEs
> add nothing new here. Start with a simple zone:
>
> *    CNAME wild.example.net.
> www  A     192.168.1.101
>
> And the same queries (query label, RR type, result)
>
> bob  A     CNAME wild.example.net.
> bob  MX CNAME wild.example.net.
> joe  A CNAME wild.example.net.
> joe  MX    CNAME wild.example.net.
> www  A     192.168.1.101
> www  MX    (no data)


Thanks a lot. that make me much clear.

regards.