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Re: [DNSOP] DNSSEC in draft-ietf-dnsop-resolver-priming

"Wessels, Duane" <dwessels@verisign.com> Tue, 26 January 2016 22:32 UTC

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From: "Wessels, Duane" <dwessels@verisign.com>
To: dnsop WG <dnsop@ietf.org>
Thread-Topic: [DNSOP] DNSSEC in draft-ietf-dnsop-resolver-priming
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Date: Tue, 26 Jan 2016 22:32:45 +0000
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Cc: Matthäus Wander <matthaeus.wander@uni-due.de>
Subject: Re: [DNSOP] DNSSEC in draft-ietf-dnsop-resolver-priming
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> On Jan 23, 2016, at 2:25 PM, Matthäus Wander <matthaeus.wander@uni-due.de> wrote:
> 
> 
> There's another issue: once root-servers.net is signed, the priming
> response will contain RRSIG in the ADDITIONAL section.

Indeed.  According to my simple test if root-servers.net is signed (the
same way as the root zone), the response size jumps quite a bit:


EDNS0?  UDPsize  DO=  RSN signed?  resp size
------  -------  ---  -----------  ---------
  n        -      -        n         492-512
  y       4096    0        n             755
  y       4096    1        n             913
  y       8192    1        y            4081

And these sizes could increase if two remaining letters decide to add AAAA records.

DW

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