Forward zone not working

Woodworth, John R John.Woodworth at
Sat May 21 20:00:29 UTC 2016

> -----Original Message-----
> From: bind-users-bounces at [mailto:bind-users-bounces at] On Behalf Of Matus UHLAR - fantomas
> Sent: Saturday, May 21, 2016 1:16 PM
> To: bind-users at
> Subject: Re: Forward zone not working
> >2016-05-20 23:09 GMT+02:00 Woodworth, John R <John.Woodworth at>:
> >> The below referenced I-D for "BULK" records:
> >>   * Provides "generics" which are automatically generated based on a set of rules.
> >>   * The records have similar features as wildcards where they may be superimposed
> >>     an appear only where more specific records do not already exist.
> >>   * There are provisions for DNSSEC support of BULK generated records.
> >>   * Can be done at any place in the DNS tree and overridden throughout the tree.
> >>   * Can be easily AXFRed between servers.
> >>   * Have immeasurably lower memory footprint compared with $GENERATEs (esp. IPv6).
> On 21.05.16 03:10, MegaBrutal wrote:
> >I wanted to comment earlier that I really like the idea of BULK
> >records, and the invention of it seems logical. I think it fits well
> >into the evolution of the DNS protocol, it seems to be an answer to a
> >need not seen before. I hope it will be supported by BIND in the
> >future. It would be really insane to generate & store PTR records the
> >traditional way when we talk about typical sizes of IPv6 ranges.
> what would you do if someone started using his home /64 network to
> ping your servers? your DNS server would run out of memory very
> short time after.


Thanks for the comment.  This specific problem already exists today it
just depends on where you want to "hide the body".  More on this can be
found in the I-D.

John Woodworth                          CenturyLink, Inc.
  Q. Can BULK DNS Handle 18 Quintillion PTR Records??
  A. BULK CAN            (18,446,744,073,709,551,616 +)
[ ]

> >As for the usefulness of PTR records for dynamic pools, I think proper,
> >forward-confirmed PTR records tell valuable information of the user of
> >the network. While normally this information is available in WHOIS, it
> >is not so easy and straightforward to retrieve, and it is not always
> >accurate. More often than not, WHOIS records only lead back to the ISP
> >when actually you want to know the user of the network. In case of
> >small businesses and home users, WHOIS does not reflect the actual user
> >of the IP range, while a reverse PTR could give a shorthand.
> I have no idea how will ordinary DNS in ipv6 look like, but I doubt
> it will look like this...
> --
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