Hi Ryan,
Sorry I wasn't more clear in my original post. Barry hit the nail on
the head: I was curious if the RFCs required BIND to append $ORIGIN to
targets that aren't fully qualified. Sounds like they do.
I appreciate the help!
John
On 07/18/2013 05:59 PM, Novosielski, Ryan wrote:
Are you asking if the target of a CNAME need be an FQDN if $ORIGIN is
defined? If so, no, I use short names (no trailing dot) all the time.
*From*: John Miller [mailto:johnm...@brandeis.edu]
*Sent*: Thursday, July 18, 2013 05:49 PM
*To*: Bind Users Mailing List <bind-users@lists.isc.org>
*Subject*: Re: RFC requirements for relative CNAME targets?
On Thu, Jul 18, 2013 at 4:29 PM, Charles Swiger <cswi...@mac.com
<mailto:cswi...@mac.com>> wrote:
On Jul 18, 2013, at 1:18 PM, John Miller <johnm...@brandeis.edu
<mailto:johnm...@brandeis.edu>> wrote:
> I know that for the following record in example.com
<http://example.com>'s zone file:
>
> host.example.com <http://host.example.com>. IN CNAME otherhost
>
> BIND will return:
>
> host.example.com <http://host.example.com>. <TTL> IN CNAME
otherhost.example.com <http://otherhost.example.com>.
Assuming $ORIGIN is set to example.com <http://example.com>, but yes.
> Is this behavior required anywhere in the RFCs, or would
>
> host.example.com <http://host.example.com>. <TTL> IN CNAME otherhost.
>
> be equally valid from an RFC perspective? Obviously this would
also pertain to NS, MX, SRV, PTR, etc. records.
"otherhost." is equally valid from an RFC perspective, or
"otherhost.other.domain." If there is a trailing dot, the CNAME
target is assumed to be fully qualified, otherwise $ORIGIN is
appended just as it would be for any other record using an
unqualified name.
Regards,
--
-Chuck
I think what I was getting at was whether appending $ORIGIN to an
unqualified target--only talking target, not label--was _required_ by
the RFCs, and if so, the RFC/section. I'll read through 'em; was just
hoping someone knew the answer off the top of their head.
John
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