On Tue, Apr 01, 2008 at 06:34:38AM +1100, Mark Andrews wrote:
>
> Multiple PTR records do not scale.
what does that mean Mark?
why does "Multiple A records" scale and not others?
is this a DNS protocol issue or an implementation artifact?
> Today we have reverse lookups that fail because people
> followed this path and exceeded the 64K DNS message size
> of TCP.
and the same failure would be true for multiple instances
of any RR type.
> When people have a 100 thousand virtual domains on a
> box you just can't have PTR records for all of them.
and apparently you can't have A records for them either.
>
> Mark
so the actual spec limit is any mixture of RR types that
will fit into a 64k DNS message on TCP. Right?
--bill
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