DNS format error

Mukund Sivaraman muks at isc.org
Wed Jul 29 13:22:55 UTC 2015


Hi Tony, Yang

On Tue, Jul 28, 2015 at 10:41:49PM +0100, Tony Finch wrote:
> However the weirdness in the NSEC3 record is not what is upsetting BIND,
> and it might be a bug. A noerror response with just NSEC3 and RRSIG(NSEC3)
> in the authority section should (I think) be treated as a type 3 nodata
> response (see RFC 2308). However BIND requires type 3 nodata responses to
> have completely empty authority sections. BIND will only recognise type 1
> or type 2 nodata responses (with SOA records in the authority section)
> from signed zones.

Mark pointed out on our internal bug ticket that RFC 2308 section 3
requires "no data" replies from signed zones to have an SOA RR in the
authority section.

		Mukund
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