zone transfer problem (newbie issue)
Paul Vixie
vixie at sa.vix.com
Sat May 14 15:07:08 UTC 2005
> > > No Brad, BIND 8 and BIND 9 interoperate and handle AXFR zone transfers
> > > just fine.
> >
> > If that were true, then the ISC BIND FAQ wouldn't have an entry
> > for "Zone transfers from my BIND 9 master", and there wouldn't be an
> > option for "transfer-format one-answer;".
>
> BIND 4.9.6 and later accept many-answer responses.
yes, and i apologized to microsoft, who had had to change their own server
in the NT 3.51 "resource kit" to deal with old BIND4's single-answer format.
> > > It's IXFR where there may be issues. AXFR format hasn't
> > > changed since RFC 1034 was issued.
> >
> > IXFR doesn't work correctly outside of BIND-9, that's true.
that's not true at all. BIND 8.3 and later do an acceptable job on IXFR.
> BIND 4 only ever generated one-answer AXFR streams.
>
> BIND 8 has always accepted many-answer and by default produces
> one-answer AXFR streams.
>
> BIND 9 has always accepted many-answer and by default produces
> many-answers AXFR streams.
>
> Certain older versions of Microsoft's nameserver use a 16k
> buffer (rather than a 64 buffer) and as a result can't
> accept a many-answer AXFR stream that uses full sized
> transmit buffers. To interoperate with these versions you
> transmit one-answer stream which work for all but the most
> exceptional zones.
this is good information and deserves repeating or perhaps even archiving.
--
Paul Vixie
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