<html><head><meta http-equiv="content-type" content="text/html; charset=us-ascii"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">OK.<div><div><br></div><div>Firstly, the bad news. ECS is only available in the subscription version of BIND. That is, versions ending with -S. To get this version you need a (paid) support contract with ISC. If you are interested, let me know.</div><div><br></div><div>Secondly, 9.18.21 is not current. I would recommend that you use the latest version, which is 9.18.26 (you can see in your screenshot).</div><div><br></div><div>I hope that helps.</div><div>Greg</div><div><br><blockquote type="cite"><div>On 28 Apr 2024, at 08:42, Yang <395096713@qq.com> wrote:</div><br class="Apple-interchange-newline"><div><meta http-equiv="Content-Type" content="text/html; charset=GB18030"><div><br></div><div><br></div><div>is v.9.18.21 below this reference</div><div><br></div><div><img alt="232D6AEB@65B7715F.E9FD2D66.png" src="cid:232D6AEB@65B7715F.E9FD2D66.png"><br><br></div><div><br></div><div><hr align="left" style="margin: 0 0 10px 0;border: 0;border-bottom:1px solid #E4E5E6;height:0;line-height:0;font-size:0;padding: 20px 0 0 0;width: 50px;"><div style="font-size: 14px; font-family: Verdana;"><a class="xm_write_card" id="in_alias" style="white-space: normal; display: inline-block; text-decoration: none !important;font-family: -apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei;" href="https://wx.mail.qq.com/home/index?t=readmail_businesscard_midpage&nocheck=true&name=Yang&icon=http%3A%2F%2Fthirdqq.qlogo.cn%2Fg%3Fb%3Dsdk%26k%3DQCkTfUibqnEM6qRuG2lPLNA%26s%3D100%26t%3D1556340979%3Frand%3D1639145287&mail=395096713%40qq.com&code=" target="_blank"><table style="white-space: normal;table-layout: fixed; padding-right: 20px;" contenteditable="false" cellpadding="0" cellspacing="0"><tbody><tr valign="top"><td style="width: 40px;min-width: 40px; padding-top:10px"><div style="width: 38px; height: 38px; border: 1px #FFF solid; border-radius:50%; margin: 0;vertical-align: top;box-shadow: 0 0 10px 0 rgba(127,152,178,0.14);"><img src="http://thirdqq.qlogo.cn/g?b=sdk&k=QCkTfUibqnEM6qRuG2lPLNA&s=100&t=1556340979?rand=1639145287" style="width:100%;height:100%;border-radius:50%;pointer-events: none;" data-unique-identifier=""></div></td><td style="padding: 10px 0 8px 10px;"><div class="businessCard_name" style="font-size: 14px;color: #33312E;line-height: 20px; padding-bottom: 2px; margin:0;font-weight: 500;">Yang</div><div class="businessCard_mail" style="font-size: 12px;color: #999896;line-height: 18px; margin:0;">395096713@qq.com</div></td></tr></tbody></table></a></div></div><div> </div><div style="position: relative;"><div><br></div><div><br></div><div style="font-size: 12px;font-family: Arial Narrow;padding:2px 0 2px 0;">------------------ Original ------------------</div><div style="font-size: 12px;background:#efefef;padding:8px;"><div><b>From:</b> "Greg Choules" <greg@isc.org>;</div><div><b>Date:</b> Sun, Apr 28, 2024 03:39 PM</div><div><b>To:</b> "Yang"<395096713@qq.com>;<wbr></div><div><b>Cc:</b> "bind-users"<bind-users@lists.isc.org>;<wbr></div><div><b>Subject:</b> Re: [help]how to configure ecs subnet for bind-9.18-21</div></div><div><br></div><div>Hello.</div><div>Do you mean 9.18-S1?</div><div><br></div><div><br></div><div><blockquote type="cite"><div>On 28 Apr 2024, at 08:06, Yang via bind-users <bind-users@lists.isc.org> wrote:</div><br class="Apple-interchange-newline"><div><div><br></div><div><div style=" ; ; ;; ">dear admin:</div><div style=" ; ; ;; position: relative; "><div style="position: relative;"><div> now, i use bind-9.18-21, i want to use ecs client subnet function; but i don't know how to configure it, and i don't get method from google</div><div> please give me some example,or document , or google links to learn about it ;</div><div> thanks!</div></div></div></div><div><hr align="left" style="margin: 0 0 10px 0;border: 0;border-bottom:1px solid #E4E5E6;height:0;line-height:0;font-size:0;padding: 20px 0 0 0;width: 50px;"><div style="font-size: 14px; font-family: Verdana;"><a class="xm_write_card" id="in_alias" style="white-space: normal; display: inline-block; text-decoration: none !important;font-family: -apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei;" href="https://wx.mail.qq.com/home/index?t=readmail_businesscard_midpage&nocheck=true&name=Yang&icon=http%3A%2F%2Fthirdqq.qlogo.cn%2Fg%3Fb%3Dsdk%26k%3DQCkTfUibqnEM6qRuG2lPLNA%26s%3D100%26t%3D1556340979%3Frand%3D1639145287&mail=395096713%40qq.com&code=" target="_blank"><table style="white-space: normal;table-layout: fixed; padding-right: 20px;" contenteditable="false" cellpadding="0" cellspacing="0"><tbody><tr valign="top"><td style="width: 40px;min-width: 40px; padding-top:10px"><div style="width: 38px; height: 38px; border: 1px #FFF solid; border-radius:50%; margin: 0;vertical-align: top;box-shadow: 0 0 10px 0 rgba(127,152,178,0.14);"><img src="http://thirdqq.qlogo.cn/g?b=sdk&k=QCkTfUibqnEM6qRuG2lPLNA&s=100&t=1556340979?rand=1639145287" style="width:100%;border-radius:50%;pointer-events: none;" data-unique-identifier=""></div></td><td style="padding: 10px 0 8px 10px;"><div class="businessCard_name" style="font-size: 14px;color: #33312E;line-height: 20px; padding-bottom: 2px; margin:0;font-weight: 500;">Yang</div><div class="businessCard_mail" style="font-size: 12px;color: #999896;line-height: 18px; margin:0;">395096713@qq.com</div></td></tr></tbody></table></a></div></div>-- <br>Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list<br><br>ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.<br><br><br>bind-users mailing list<br>bind-users@lists.isc.org<br>https://lists.isc.org/mailman/listinfo/bind-users<br></div></blockquote></div><br></div></div></blockquote></div><br></div></body></html>