Bind to Bind DNS Lookup - Returns wildcard value for defined A record

Greg Choules gregchoules+bindusers at googlemail.com
Sun Jul 16 08:24:52 UTC 2023


Real data please:
- example queries (genuine, not invented for illustration)
- real domains
- real IP addresses
- packet captures
- both BIND server configs
- zone file contents
- startup logs

There are so many things it *could* be, the more information the better.

Cheers, Greg

On Sun, 16 Jul 2023 at 09:09, OwN-3m-All <own3mall at gmail.com> wrote:

> I've got a bind recursion DNS server setup that is returning the wrong
> value for an outside domain that I also maintain and host on another server
> running a bind DNS server.  Yet Google's DNS and other major DNS providers
> respond with the correct IP address A record when querying.  I can't figure
> out why my recursion enabled instance is not returning the correct IP
> address for a specific host.  Rather, it returns the wildcard value from
> the zonefile rather than the specifically specified A record entry created
> for that host.
>
> It appears bind to bind is returning the wildcard value for a specifically
> defined host in the zonefile from the server it's hosted on.
>
> Is this a recent bug in bind?  More information about my setup and issue
> can be found here:
>
>
> https://serverfault.com/questions/1136914/bind-recursion-dns-server-returning-wildcard-address-for-host-despite-exact-entr
>
> From what I found online, if there's a specific host A record entry
> defined, it should always return that IP.  Wildcard is only for those not
> defined.  Yet, when I remove the wildcard from the zonefile, my bind
> recursion instance returns the correct value, but not when the wildcard
> entry is there.  But Google and other major DNS providers return the
> non-wildcard value as expected.
>
> Any help is appreciated.
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