<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hello bind-announce,<div class=""><br class=""></div><div class="">BIND 9.11 is now in its last quarter of support. We are fixing critical security issues only at this point. It is time to start making plans to update if you are still running a 9.11 version. (The current release plan is published at <a href="https://kb.isc.org/docs/aa-00896" class="">https://kb.isc.org/docs/aa-00896</a>.)</div><div class=""><br class=""></div><div class="">BIND 9.11.0 was published in October of 2016. A *lot* has happened since then. Also, we have refactored some significant functions in BIND and 9.16 has quite a few changes compared to 9.11.</div><div class=""><br class=""></div><div class="">One of our support engineers analyzed the differences in options between the versions, and wrote this KB article for people migrating: <a href="https://kb.isc.org/docs/changes-to-be-aware-of-when-moving-from-911-to-916" class="">https://kb.isc.org/docs/changes-to-be-aware-of-when-moving-from-911-to-916</a> .</div><div class=""><br class=""></div><div class="">We also have updated the ‘BIND Significant Features Matrix’ with the major feature differences between releases. This is not as detailed as the KB mentioned above. <a href="https://kb.isc.org/docs/aa-01310" class="">https://kb.isc.org/docs/aa-01310</a>. </div><div class=""><br class=""></div><div class="">While we don’t have current performance tests that compare the latest 9.11 version to the latest 9.16 version, we did quite a bit of performance testing on the 9.16 branch in 2021 and we do not expect any loss of performance moving from 9.11 to 9.16. (see <a href="https://www.isc.org/blogs/bind-resolver-performance-july-2021/" class="">https://www.isc.org/blogs/bind-resolver-performance-july-2021/</a> for performance results for resolver operations) There may be some changes in memory utilization, which we have tried to minimize in the latest versions. (see <a href="https://kb.isc.org/docs/bind-memory-consumption-explained" class="">https://kb.isc.org/docs/bind-memory-consumption-explained</a> for more details).</div><div class=""><br class=""></div><div class="">For those using the ISC BIND packages: </div><div class=""><br class=""></div><div class="">Because we are still patching 9.11, and we haven’t yet issued a new development branch, we are putting 9.18.0 into the bind-dev repositories, for now.</div><div class=""><div class=""><br class=""></div><div class="">In April, we plan to do a version rollover:</div><div class="">- bind-esv will go from 9.11 to 9.16</div><div class="">- bind will go from 9.16 to 9.18</div><div class="">- bind-dev will go from 9.18.1 to 9.19.0 </div></div><div class=""><br class=""></div><div class="">BIND 9.19.0 will be the new development branch.</div><div class=""><br class=""></div><div class="">Regards,</div><div class=""><br class=""></div><div class="">Vicky Risk</div></body></html>