Re: QNAME minimisation question

On 04/06/2025 18:50, Greg Choules wrote:
> The help text for delv says you can specify a source using -b, the 
> same as you can with dig:
>
> Usage:  delv [@server] {q-opt} {d-opt} [domain] [q-type] [q-class]
> Where:  domain  is in the Domain Name System
>         q-class  is one of (in,hs,ch,...) [default: in]
>         q-type   is one of (a,any,mx,ns,soa,hinfo,axfr,txt,...) 
> [default:a]
>         q-opt    is one of:
>                  -4                  (use IPv4 query transport only)
>                  -6                  (use IPv6 query transport only)
>                  -a anchor-file      (specify root trust anchor)
>                  -b address[#port]   (bind to source address/port)
> etc...
>
> The rest I don't know, yet.
> Hope that helps, Greg
Thanks Greg.
> On Wed, 4 Jun 2025 at 07:46, Nick Tait via bind-users 
> <[email protected]> wrote:
>
>     I've done a bit more testing on this, and it seems like if you use
>     the
>     +ns option, delv ignores the -4, -6 and -b options. I'm not sure
>     if that
>     is by design or not, but it would be useful to be able to control
>     which
>     source IP address delv uses for queries and whether delv queries
>     for A
>     or AAAA records? (It would also be good if it queried for both by
>     default -- i.e. if neither -4 or -6 were specified?)
>
>     Can anyone advise whether this something I should raise a bug
>     report for?
>
Petr, I saw that you'd created a bug report for delv not querying for A 
and AAAA records by default. I hope you don't mind, I've added the 
information above regarding -4 and -6 options (and -b) to it.

In case anyone else is interested here is the link: 
https://gitlab.isc.org/isc-projects/bind9/-/issues/5352

Nick.

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