CNAME and other data?
Kevin Darcy
kcd at daimlerchrysler.com
Mon Oct 28 22:50:40 UTC 2002
Mark Damrose wrote:
> In troubleshooting a problem in another forum, I ran across this situation.
>
> $ dig ns.rlgsc.com @ns1.speakeasy.net
>
> ;; ANSWER SECTION:
> ns.rlgsc.com. 172626 IN A 66.92.111.10
> ns.rlgsc.com. 11839 IN CNAME gatekeeper.rlgsc.com.
> gatekeeper.rlgsc.com. 12000 IN A 66.92.111.10
>
> This server is listed in the NS records, but is lame. It also allows public
> recursion. The A record is the glue record retrieved from the GTLD servers,
> and the CNAME was from the actual zone data.
>
> I know that NS records shouldn't refer to CNAME, and will advise the domain
> owner. I was surprised to see both an A and CNAME returned from cache.
>
> $ dig version.bind chaos txt @ns1.speakeasy.net
>
> ;; ANSWER SECTION:
> VERSION.BIND. 0 CH TXT "8.3.3-REL"
>
> Is this a known side effect of an NS points to CNAME misconfigured domain,
> or is this a bug?
Are you sure the bogus answer came from cache? Sometimes BIND 8 "passes
through" answers from authoritative servers (or forwarders) without much in the
way of cleanup...
- Kevin
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