[dns-operations] Recommended zone serial number format for over 100 changes / day

Mark Andrews marka at isc.org
Sat Apr 2 13:32:57 UTC 2016

In message <BF8042CC-96E5-4F51-90B8-2AA94CAEAE17 at snark.net>, Matthew Ghali writes:
> Why would you want a nameserver to try parsing/evaluating zone records as
> its transferring? That seems remarkably more fragile than simply
> performing the transfer, then parsing the data as the zone is
> subsequently loaded. What happens to your partially-loaded data if the
> transfer eventually fails?

You don't commit the delta / new zone.  If you are serving a
partial (partially updated - you can commit at the end of a delta
in a ixfr stream) zone you are not RFC compliant.

> > On Apr 1, 2016, at 3:56 PM, Colm MacCárthaigh <colm at stdlib.net> wrote:
> >
> > It's a really bad idea to accept unknown RRTYPEs. RRTYPEs have been
> defined in backwards incompatible ways in the past - such as DNAME having
> a side-effect of occluding below the DNAME cut.

Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org

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