zone transfer problem (newbie issue)

[Paul Vixie]

> > >  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