<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Sep 30, 2021, at 12:19, Viktor Dukhovni <<a href="mailto:ietf-dane@dukhovni.org" class="">ietf-dane@dukhovni.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: HelveticaNeue; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Of course the DS RRSet might also have been manually flushed from the</span><br style="caret-color: rgb(0, 0, 0); font-family: HelveticaNeue; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: HelveticaNeue; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">cache, as special treatment for "</span><a href="http://slack.com/" style="font-family: HelveticaNeue; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">slack.com</a><span style="caret-color: rgb(0, 0, 0); font-family: HelveticaNeue; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">", given their popularity and</span><br style="caret-color: rgb(0, 0, 0); font-family: HelveticaNeue; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: HelveticaNeue; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">the verifiable deletion of the DS records.</span></div></blockquote></div><br class=""><div class="">Both Google and Cloudflare have a publicly accessible feature to flush the cache for a domain, so anyone could have done it:</div><div class=""><br class=""></div><div class=""><a href="https://developers.google.com/speed/public-dns/cache" class="">https://developers.google.com/speed/public-dns/cache</a></div><div class=""><a href="https://1.1.1.1/purge-cache/" class="">https://1.1.1.1/purge-cache/</a></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Ask</div></body></html>