localhost name lookup

[Greg Choules]

> On 24 Jan 2025, at 21:32, Lee <ler762 at gmail.com> wrote:
> 
> On Fri, Jan 24, 2025 at 3:27 PM Greg Choules wrote:
>> 
>> 
>>> On 24 Jan 2025, at 19:07, Lee <ler762 at gmail.com> wrote:
>>> 
>>> On Mon, Jan 20, 2025 at 4:55 AM Petr Špaček wrote:
>>>> 
>>>> On 15. 01. 25 19:55, Lee wrote:
>>>>> On Wed, Jan 15, 2025 at 11:55 AM Ondřej Surý wrote:
>>>>>> On 14. 1. 2025, at 16:56, Lee <ler762 at gmail.com> wrote:
>>>>>> 
>>>>>> In other words, should I submit a bug report to the Debian bind
>>>>>> maintainers or ISC?
>>>>>> 
>>>>>> 
>>>>>> With both my ISC and Debian hats on, I am going to be very frank
>>>>>> and say this has a very low priority, so unless you actually want to
>>>>>> work on this and submit a solid correct patch with a good reasoning,
>>>>>> there's probably nobody that is going to work on this.
>>>>> 
>>>>> I appreciate the honesty, but I think I'm missing something?
>>>>> 
>>>>> The good reasoning part would be quoting the RFC and the solid correct
>>>>> patch would be stripping out everything except the two line change I
>>>>> made to my db.local in the original post.
>>>> 
>>>> Unfortunately not quite, BIND does not ship with any zone files.
>>> 
>>> Really?!  I installed BIND on windows however long ago when it was
>>> supported on Windows and it came with a db.local that looked identical
>>> to the one that came with Debian.
>> 
>> Certainly for the last quite a lot of years there hasn't been a hint zone file - whatever it might be called - shipped with BIND, if ever: there are too many releases to search through.
>> The current (at the time of release) set of root servers are contained in the file rootns.c, but this is definitely not a zone file, just the place BIND gets its built-in hints from.
>> I would think that, if a file called db.local, db.hint, db.root or whatever does exist, it is someone else who created it.
> 
> I don't know who created or included db.local in the distribution of
> bind.  What I do know is that my installation of bind on windows and
> my installation of bind on debian came with a db.local -- here's the
> one that came with my installation of bind on Windows:
> 

I just looked in the source for 9.0.0, released nearly 25 years ago, to see what was there because I was curious. There is no file called “db.local": here’s the link if you want to check for yourself: https://downloads.isc.org/isc/bind9/9.0.0/ Every release since then is also available to download, should you want to check them all.
So the fact that you *do* have a file called “db.local", I think means nothing. Anyone could have created that for some purpose only they knew at the time.

> C:\MyProgs\BIND\etc>more db.local
> ;
> ; BIND data file for local loopback interface
> ;
> $TTL    604800
> @       IN      SOA     localhost. root.localhost. (
>                              2         ; Serial
>                         604800         ; Refresh
>                          86400         ; Retry
>                        2419200         ; Expire
>                         604800 )       ; Negative Cache TTL
> ;
> @       IN      NS      localhost.
> @       IN      A       127.0.0.1
> @       IN      AAAA    ::1
> 
> C:\MyProgs\BIND\etc>
> 
> and here's my modified copy of db.local on my Debian machine (I added
> the two wildcard lines for .localhost.)
> 
> lee at spot /etc/bind
> $ cat db.local
> ;
> ; BIND data file for local loopback interface
> ;
> $TTL    604800
> @       IN      SOA     localhost. root.localhost. (
>                              3         ; Serial
>                         604800         ; Refresh
>                          86400         ; Retry
>                        2419200         ; Expire
>                         604800 )       ; Negative Cache TTL
> ;
> @       IN      NS      localhost.
> @       IN      A       127.0.0.1
> @       IN      AAAA    ::1
> 
> *       IN      A       127.0.0.1
>        IN      AAAA    ::1
> 
> 
> lee at spot /etc/bind
> $ dig +short foo.bar.localhost aaaa
> ::1
> 
> lee at spot /etc/bind
> $ grep db.local *
> named.conf.default-zones:       file "/etc/bind/db.local";
> 
> lee at spot /etc/bind
> $
> 
> 
> Regards,
> Lee

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