[Pdns-users] IXFR request refused response

[Peter van Dijk]

On Mon, 2020-11-23 at 14:54 +0000, Brian Candler via Pdns-users wrote:
> On 23/11/2020 13:33, Sebastian Sandberg via Pdns-users wrote:
> > I have questions regarding IXFR. I have a problem in my lab where pdns is refusing IXFR requests to check current serial of a master zone in pdns. This seems to appear when IXFR is requested over UDP.
> 
> Aside: I see in ./docs/modes-of-operation.rst and here:
> "PowerDNS itself is currently only able to retrieve updates via IXFR. It can not serve IXFR updates."
> Is that sentence still true, or now obsolete?

That sentence is still true, however, IXFR requests over TCP are
honored by either a 'nothing has changed' response, or a fallback to
full AXFR. So PowerDNS does interoperate correctly with IXFR clients -
as long as you do it over TCP.

Kind regards,
-- 
Peter van Dijk
PowerDNS.COM BV - https://www.powerdns.com/