NOTIFY messages from slaves

[Michael Kjorling]

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On Nov 24 2001 08:57 -0700, Jim McAtee wrote:

> Under BIND9, do slave servers normally send NOTIFYs?  I notice this in
> my logs.  After the slave receives a NOTIFY and updates a zone, it
> attempts to notify the slaves (including itself?), which are always
> refused, since the slave has not been designated as a master for the
> zone.

I have seen these as well. However, they are not refused by my systems
at least - they simply are acted upon in the expected way: since the
SOA serial is the same or maybe even lower on the machine sending the
NOTIFY than the master, it is ignored.

Usually, it is *slaves* and not masters that *act* on NOTIFYs. Masters
are commonly the first name servers to send them.


> What is the normal practice for slave zones?  Just designate the
> option "notify no" in the zone statement, or add the other slaves into
> the 'masters'?
>
> Jim

I would leave notify to yes unless you have a really huge number of
zones, as it might help speed up zone propagation.


Michael Kjörling

- -- 
Michael Kjörling  --  Programmer/Network administrator  ^..^
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