sending notifies from slave server
jim at rfc1035.com
Wed Oct 6 15:46:29 UTC 2004
>>>>> "David" == David Botham <DBotham at OptimusSolutions.com> writes:
David> By default named will send notifies to all name servers
David> listed in the NS RR set for a given zone, except for the
David> name server listed in the dname field of the SOA RR,
David> regardless of whether named loaded the zone as a master or
David> slave. This behavior is driven by RFC 1996.
David> You probably don't want the slave(s) sending the notify.
Nope. Switching this off can be harmful. Suppose Slave A has lost
connectivity to the master server but could have received a NOTIFY and
done a zone transfer from Slave B. Would it be better for A to hand
out stale data for the zone or retrieve an up-to-date version from B?
Leaving NOTIFY switched on -- BIND's default behaviour -- is harmless.
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