On 30/03/16 01:19, Mark Andrews wrote:
Your monitoring probe is broken.
STD 13 says that that the DNS is case preserving. The problem is
that lots of servers aren't case preserving instead they echo back
the query case in the owner names of records returned which named
then records.
Can I be clear on what you think would be the correct behaviour here?
Presumably the question section should exactly match what the client
sent always, bit-for-bit, so we're talking about the ans/auth/add
sections - they should, in your reading of the standards, match the case
of the on-disk authoritative data, not what the client sent, yes?
Am I correct in assuming that, by case-sensitively compressing labels
for many years, bind has been doing the opposite (the label compression
effectively throwing away the carefully case-preserved data)?
I'm curious why this has come to the fore now, if you're able to say?
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