zone transfer problem (newbie issue)

[Mark Andrews]

> At 10:12 PM -0400 2005-05-13, mayer wrote:
> 
> >  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;".
> 
> >             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. 
> However, there can also be some issues with correctly interpreting 
> the AXFR from a BIND-9 server.
> 
> -- 
> Brad Knowles, <brad at stop.mail-abuse.org>
> 
> "Those who would give up essential Liberty, to purchase a little
> temporary Safety, deserve neither Liberty nor Safety."
> 
>      -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
>      Assembly to the Governor, November 11, 1755
> 
>    SAGE member since 1995.  See <http://www.sage.org/> for more info.

	BIND 4.9.6 and later accept many-answer responses.

	From BIND 4 CHANGES.

779. [bug]      named-xfer can now handle RFC1035-compliant zone transfers.

	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.

	Mark
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org