Strange DNS PTR records
linux at kukkukk.com
Thu Jun 6 05:30:23 MDT 2013
Am Mittwoch, 5. Juni 2013, 22:18:28 schrieb Charles Tryon:
> Another question regarding DNS:
> I have a test domain I provisioned quite a while ago (probably shortly
> before the final 4.0.0 release, but I don't remember exactly when). It is
> currently set up to use BIND 9.9 for DNS. Most things are running fine on
> it (though admittedly it doesn't get pushed very hard).
> When I look at the domain using the DNS manager from Windows Remote
> Management Tools set (from a Win7 client), I the forward lookup zone looks
> fine, but I see a bunch of strange PTR records. Almost all the PTR records
> have five octets rather than the normal four -- for example, 10.4.0.0.100,
> or 10.4.2.2.10. In all cases, the third and fourth positions are the same.
> (We are using a /19 subnet.) The really bizarre thing is that if I try to
> delete the records, I get an error back that the records "do not exist."
> Is this an example of the "zombie DNS records" which I've seen mentioned
No, this seems to be a different issue.
I assume, you've already done a valid kinit. Otherwise add "-U Administrator"
at the end.
Please post the outcome of:
samba-tool dns zonelist your_dns_server
One reverse zone like "4.10.in-addr.arpa" should be listed.
samba-tool dns query your_dns_server 4.10.in-addr.arpa @ ALL
Post this outcome, too.
> - If it is, what is the best way to clean this up?
> - If I use the "samba_upgradedns" command, will that purge/rebuild/fix the
> DNS database, or will it simply change the front end (BIND vs. Internal)
> server which is looking at the same back end database?
> (Re-provisioning this box from scratch isn't entirely out of the question,
> since it is a test server, but it would be a big pain to reconstruct the
> domain, especially the machine accounts. :-( )
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