auth-zone reverse DNS

Ralph Dolmans ralph at nlnetlabs.nl
Thu Jul 11 11:51:34 UTC 2019


Hi Matt,

Unbound has a default local-zone for that address range. Since
local-zones are applied before the auth-zone this default is used for
your query.

You can override the default like this:

local-zone: "0.0.10.in-addr.arpa." transparent

-- Ralph

On 11-07-19 12:55, Matt Schwartz via Unbound-users wrote:
> Hi Ralph,
> 
> Thank you for your response. I made the changes that you suggested. Here
> is what my zone declaration looks like:
> auth-zone:
>         name: "0.0.10.in-addr.arpa."
>         zonefile: "/etc/unbound/meow.lan.rev"
> 
> Here is what my zone file looks like:
> $TTL 30m
> $ORIGIN 0.0.10.in-addr.arpa.
> 
> @  SOA 0.0.10.in-addr.arpa. hostmaster.meow.lan. (
>                              2019071105 ;Serial
>                              30m   ;Refresh
>                              15m   ;Retry
>                                4w   ;Expire
>                              30m)  ;Min TTL
> @ IN NS bast.meow.lan.
> 1 IN PTR bast.meow.lan.
> 2 IN PTR jaguar.meow.lan.
> 3 IN PTR ida.meow.lan.
> 4 IN PTR ollie.meow.lan.
> 
> All reverse DNS queries result in an NXDOMAIN. I am sure I am doing
> something wrong. 
> 
> Thank you again,
> Matt
> 
> On Thu, Jul 11, 2019 at 5:39 AM Ralph Dolmans via Unbound-users
> <unbound-users at nlnetlabs.nl <mailto:unbound-users at nlnetlabs.nl>> wrote:
> 
>     Hi Matt,
> 
>     I assume you are querying for 1.0.0.10.in-addr.arpa, this domain is not
>     part of your 0.0.0.10.in-addr.arpa zone and therefore is resolved
>     without using the auth-zone.
> 
>     Try using an auth zone for 1.0.0.10.in-addr.arpa itself, or a parent
>     like 10.in-addr.arpa.
> 
>     -- Ralph
> 
>     On 08-07-19 03:19, Matt Schwartz via Unbound-users wrote:
>     > Hello list,
>     >
>     > I have been playing with Unbound's new-ish auth-zone feature and it's
>     > great. However, when I set up an auth-zone for reverse DNS, drill
>     > returns an NXDOMAIN. Has this just not been implemented yet? As a
>     > work-around I've done the following inside of unbound.conf
>     >
>     > local-zone: "0.0.0.10.in-addr.arpa" transparent
>     > local-data-ptr: "10.0.0.1 myhost.mydomain"
>     >
>     > I had the following auth-zone for reverse DNS but it did not work.
>     > auth-zone:
>     >      name: "0.0.0.10.in-addr.arpa"
>     >      zonefile: /etc/unbound/myzone
>     >      for-downstream: yes
>     >
>     > Thanks,
>     > Matt
> 



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