Question About Recursion In A Split Horizon Setup

[Bob Harold]

On Fri, Apr 17, 2020 at 12:45 PM Tim Daneliuk <tundra at tundraware.com> wrote:

> On 4/17/20 10:17 AM, julien soula wrote:
> > On Fri, Apr 17, 2020 at 09:56:21AM -0500, Tim Daneliuk wrote:
> >> On 4/17/20 9:50 AM, Bob Harold wrote:
> >>>
> >>> Agree, that's odd, and not what the man page says.  Any chance that
> there is some other DNS helper running, like resolved, nscd, dnsmasq, etc?
> >>
> >> Nope.  This is vanilla FreeBSD with vanilla bind running.
> >>
> >>> 'dig' should tell you what address it used, at the bottom of the
> output - what does it say?
> >>
> >>
> >>
> >> ;; Query time: 0 msec
> >> ;; SERVER: ::1#53(::1)
> >> ;; WHEN: Fri Apr 17 09:53:51 CDT 2020
> >> ;; MSG SIZE  rcvd: 83
> >>
> >>
> >> Does the SERVER line indicate it's trying to get to the local instance
> via
> >> IPV6 or is this just standard notation?  (This is an IPV4 only
> environment).
> >
> > "::1" is locahost in IPv6. It is not the same as 127.0.0.1 . A least,
> > you should add this IP to trustedhosts to check if it works.
> >
> > best regard,
> >
>
>
> Aha!  That was it.  What is curious to me is that bind uses this even in
> the absence
> of any IPV6 in the environment.
>
> Problem solved.  Thanks all!
>
>
>
> --
>
> ----------------------------------------------------------------------------
> Tim Daneliuk     tundra at tundraware.com
> PGP Key:         http://www.tundraware.com/PGP/
>
>
As a separate issue:  Check the logs to see if BIND is trying to use IPv6
to resolve queries.  Look for messages like:
address not available resolving .... with some IPv6 address
I have to start named with the "-4" option on my servers that do not yet
have IPv6 connectivity.

-- 
Bob Harold
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