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<p class="MsoNormal">Howdy bind-users list.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">TLDR: we were able to move zones between DNS servers with different KSK/ZSK while keeping the zones secure.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">First I want to say a BIG thank you for the replies received since it helped in documenting our workflow for these migrations.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Off list, Paul E. mentioned that a test domain might be handy and that obvious suggestion made a big difference. No pressure if we mess it up. Thanks Paul.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Additionally, Paul also included a link to a draft of multi-signer DNSSEC:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a href="https://tools.ietf.org/html/draft-ietf-dnsop-multi-provider-dnssec">https://tools.ietf.org/html/draft-ietf-dnsop-multi-provider-dnssec</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Of note is the section titled: 2.1.2. Model 2: Unique KSK set and ZSK set per provider<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Therein it mentions how “Each provider has their own KSK and ZSK sets” and that is exactly the situation we found ourselves. Our testing showed that we could “double-sign” our test zone (is that the correct phrase in this context?) and
it remained secured as indicated by the “ad” flag:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"># dig fqdnhere.com +dnssec +multi <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">; <<>> DiG 9.14.2 <<>> fqdnhere.com +dnssec +multi<o:p></o:p></p>
<p class="MsoNormal">;; global options: +cmd<o:p></o:p></p>
<p class="MsoNormal">;; Got answer:<o:p></o:p></p>
<p class="MsoNormal">;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44429<o:p></o:p></p>
<p class="MsoNormal">;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 1<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Although dnsviz.net indicated that the zone was secure it produced many, many complaints about errors it was finding. Which, honestly, is to be expected. For example:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">“The DS RRset for the zone included algorithm 10 (RSASHA512), but no DS RR matched a DNSKEY with algorithm 10 that signs the zone's DNSKEY RRset”<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">At first glance the task looked overwhelming but it could not have been easier.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">John<o:p></o:p></p>
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