nsupdate: using "wildcard" TTL when removing specific record

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nsupdate: using "wildcard" TTL when removing specific record

Petr Bena
Hello,

Is there any way to tell nsupdate to delete specific record with ANY TTL
value? For example I have following record:

record.domain.org 3500 A 1.2.3.4

I want to delete exactly that record (A with IP 1.2.3.4), except I don't
know what the TTL is, normally, if I knew the TTL, I would do

update delete record.domain.org 3500 A 1.2.3.4

But I would like to do something like

update delete record.domain.org * A 1.2.3.4

Is there any way to accomplish this, or do I always have to retrieve the
record somehow, figure out the TTL and then continue?

Thanks

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Re: nsupdate: using "wildcard" TTL when removing specific record

Mark Andrews
TTL is ignored on delete if it present.  It is set to 0 when sending.

2.5.4 - Delete An RR From An RRset

   RRs to be deleted are added to the Update Section.  The NAME, TYPE,
   RDLENGTH and RDATA must match the RR being deleted.  TTL must be
   specified as zero (0) and will otherwise be ignored by the primary
   master.  CLASS must be specified as NONE to distinguish this from an
   RR addition.  If no such RRs exist, then this Update RR will be
   silently ignored by the primary master.



> On 1 Jun 2020, at 18:45, Petr Bena <[hidden email]> wrote:
>
> Hello,
>
> Is there any way to tell nsupdate to delete specific record with ANY TTL value? For example I have following record:
>
> record.domain.org 3500 A 1.2.3.4
>
> I want to delete exactly that record (A with IP 1.2.3.4), except I don't know what the TTL is, normally, if I knew the TTL, I would do
>
> update delete record.domain.org 3500 A 1.2.3.4
>
> But I would like to do something like
>
> update delete record.domain.org * A 1.2.3.4
>
> Is there any way to accomplish this, or do I always have to retrieve the record somehow, figure out the TTL and then continue?
>
> Thanks
>
> _______________________________________________
> Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list
>
> ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.
>
>
> bind-users mailing list
> [hidden email]
> https://lists.isc.org/mailman/listinfo/bind-users

--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: [hidden email]

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