does type forward zones make BIND 8 continuously poll?

[Marc Thach Xuan Ky]

I'd like to disagree slightly with Cricket here,  BIND 8 prior to 8.23
would query the forwarders in listed order, timing out at 30 secs
divided by the number of forwarders.  BIND 9 times out in a different
way which I find almost indescribable!  I've got some traces lying
around somewhere if anyone's really interested, I'll forward them
individually since IIRC Listar strips off binary attachments.
Marc TXK

Cricket Liu wrote:

> > > Also, note that tracking RTT for forwarders doesn't work
> > > correctly in BIND 8 until 8.2.3, and isn't supported in BIND 9
> > > at all.
> >
> > Thanks.  How does BIND 9 do it?
>
> BIND 9 name servers query the forwarders in the order in which
> they're listed, just like BIND 8 did before 8.2.
>
> cricket
>
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