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I seem to be unable to find it in the specification that you need to
validate the new NS set. So, I don't assume that NS RRset is validated,
just updated.

I do know that the referral should be authenticated with the DS RRset,
signed with the parent key. So, I assume that the following is possible:

1. If that DS is validated with a DNSKEY RR from the parent, and it
matches the algorithm and key tag of a DNSKEY RR of the child, the
referral is considered authenticated.

2. I can use the NS RRset *from the parent* to resend my query for
<www.example.com IN A>.

3. From there, I get the new RRset signed with a key from the winning
operator.

Please show me the text from the specification that tells me that this
is impossible.


Best regards,

Matthijs






On 04/26/2011 04:14 PM, Paul Wouters wrote:
> On Tue, 26 Apr 2011, Matthijs Mekking wrote:
> 
>>> How is the NS set "updated" without validating that NS set using the
>>> DNSKEY set and DS record of the winning operator?
>>
>> How do you know which DNSKEY is from the winning operator?
>>
>> There are two DS records at the parent (DS 11111, DS 22222) and the
>> first one matches the cached DNSKEY RR.
> 
> Again, how did YOU validate the new NSset if you don't have the right
> DNSKEY? Please read the original text again. It assumes you somehow got
> an updated *validated* NSset of the new operator, without having the
> DNSKEY that validated that NSset. I keep telling you that is not possible.
> 
> Paul
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