[nsd-users] no SOA serial check before AXFR?

[Daisuke HIGASHI]

Hi,

   Every SOA REFRESH time, BIND9 slave server checks master’s SOA serial
(with ordinary UDP SOA query) and if the serial is increased it starts AXFR.

   But my NSD slave server (4.0.0 and 3.2.16) just do AXFR with
no serial checking every REFRESH time. (according to tcpdump).
I expect SOA serial checking before AXFR to avoid load at both
master/slave side.

This is my NSD configuration. Something is missing?

----------------------
server:
        logfile: "/var/log/nsd.log"
        username: “nsd”
        verbosity: 99

zone:
        name: “example.net"
        request-xfr: 192.0.2.1 NOKEY
        allow-notify: 192.0.2.1 NOKEY

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--
 Daisuke HIGASHI <daisuke.higashi at gmail.com>