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At 7:48 AM -0600 2/8/02, Len Conrad wrote:
Re: Error: Wrong size read
From: Men & Mice Support
Date: Friday, February 8, 2002
Time: 9:38:39 pm
>>Len Conrad at LenConrad@MenAndMice.com said this on 2/6/02 7:25 PM
>>
>>>// named.conf
>>>
>>>options {
>>>transfer-format ( one-answer | many-answers );
>>>};
>>
>>Changing to one-answer on BIND (9.1.3) fixed the problem with a QuickDNS
>>Pro 2.2.4 server getting a zone.
>
>:))
>
>> Mind you, about 10 other zones were
>>transfering fine between this pair of servers. Could there be something
>>with how BIND is packing records into response packets or something about
>>how 2.2.4 is unpacking?
>
>hmm, I've never heard that multiple zones are packed into a
>response. I'm pretty sure one TCP session is opened/closed to make
>a zone transfer. And I think the "one answer" says that there will
>be only one TCP session in time, while many answers permits
>multiple, concurrent TCP axfr sessions, but any one session carries
>only one axfr. I admit I haven't read the RFC in this area.
Here's my understanding, which may not be correct:
"one-answer" means the whole zone is packed into one stream.
"many-answers" means that records are sent as if using UDP, where
each "stream" contains only as many records as will fit in a packet.
I suppose a small zone might all fit in a single packet, which would
then look the same either way, and thus would be acceptable to
QuickDNS. Assuming my understanding is correct, which is not
guaranteed.
____________________________________________________________________
Chris Buxton Men & Mice
support@menandmice.com Making DNS Easy
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