abbreviated zone data question
David Botham
DBotham at OptimusSolutions.com
Fri Nov 5 22:46:19 UTC 2004
bind-users-bounce at isc.org wrote on 11/05/2004 04:02:29 PM:
> If I'm abbreviating a zone, allowing the origin to populate it, is it
> OK to do:
>
>
> IN A xxx.xxx.xxx.xxx
> www IN CNAME
> ftp IN CNAME
You would want to do this:
@ IN A xxx.xxx.xxx.xxx
www IN CNAME @
ftp IN CNAME @
The '@' symbol is important. It is the 'origin' substitution character.
>
>
> or would I have to do:
>
> www IN A xxx.xxx.xxx.xxx
> ftp IN CNAME www
> IN CNAME www
The above will not work. The last cname RR (assuming you used the @ sign
as shown above) would violate the cname and other data rule. In other
words, the domain name itself already owns NS RR's and an SOA RR. What
ever owns (is on the left side of) a CNAME RR cannot own (be on the left
side of) any other RR's.
hth,
Dave...
>
> TiA, Andrew
>
>
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