<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:PMingLiU;
panose-1:2 2 5 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Aptos;
panose-1:2 11 0 4 2 2 2 2 2 4;}
@font-face
{font-family:"\@PMingLiU";
panose-1:2 1 6 1 0 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:10.0pt;
font-family:"Aptos",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Aptos",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;
mso-ligatures:none;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style>
</head>
<body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt">Great news! That will save a lot of resources. Thank you for the information, I will test it later in our lab.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Best Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Yu<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div id="mail-editor-reference-message-container">
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Kea-users <kea-users-bounces@lists.isc.org> on behalf of Darren Ankney <darren.ankney@gmail.com><br>
<b>Date: </b>Thursday, May 30, 2024 at 2:01</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><span style="font-size:12.0pt;color:black">PM<br>
<b>To: </b>Kea user's list <kea-users@lists.isc.org><br>
<b>Subject: </b>Re: [Kea-users] [EXTERNAL] Kea 2.6.0 is released!<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Yu,<br>
<br>
I don't think so. I have not actually set this up yet, but it appears<br>
that the subnet relationships are being maintained by the<br>
"ha-server-name" "user-context" parameter in the subnet as shown in<br>
this example from the ARM:<br>
<br>
"subnet6": [<br>
{<br>
"id": 2,<br>
"subnet": "2001:db8:2::/64",<br>
"pools": [<br>
{<br>
"pool": "2001:db8:2::/80"<br>
}<br>
],<br>
"interface": "enp0s8",<br>
"user-context": {<br>
"ha-server-name": "server3"<br>
}<br>
}<br>
]<br>
<br>
I imagine that you could use the same IP address on the "hub" for all<br>
spoke relationships and simply use a different port for each. I don't<br>
think you need to add multiple IP addresses to the "hub" as implied by<br>
the example configurations under<br>
<a href="https://kea.readthedocs.io/en/kea-2.6.0/arm/hooks.html#hub-and-spoke-configuration">https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkea.readthedocs.io%2Fen%2Fkea-2.6.0%2Farm%2Fhooks.html%23hub-and-spoke-configuration&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838366106%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=R3Wuii4RReeVCPCKISl1xXFavig%2BhVzz1zczub6iiq0%3D&reserved=0</a><br>
One assumes that you would specify relay agent IP addresses or<br>
similar to make the subnet selection happen properly (in the case that<br>
the spoke server is down and the hub server needs to respond to<br>
clients). Again though, I've not tested. But since this is meant to<br>
be used in a context where broadcast networking doesn't make sense,<br>
having to use separate interfaces for each relationship wouldn't make<br>
sense either.<br>
<br>
Thank you,<br>
Darren Ankney<br>
<br>
On Thu, May 30, 2024 at 1:16</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif"> </span><span style="font-size:11.0pt">PM Xiao, Yu (CCI-Atlanta) via Kea-users<br>
<kea-users@lists.isc.org> wrote:<br>
><br>
> Hi ISC team,<br>
><br>
><br>
><br>
> I read the latest document on Kea 2.6.0 for new Hub and Spoke feature. In the beginning, we thought it could provide N+1 backup. But after I read your description and configuration example. I feel It’s more like multiple 1+1 backup, it requires the backup
server has a 1-to-1 relationship with all the other primary servers. For each 1-to-1 relationship, it requires a different interface with both hosts on a different subnet. So if we need to protect N servers, we will need N interfaces and two IPs from each
of N subnets on this central server. Is my understanding correct?<br>
><br>
><br>
><br>
><br>
><br>
> +----- Central Server ------+<br>
><br>
> | |<br>
><br>
> +----------+ relationship 1 | +----------+----------+ | relationship 2 +----------+<br>
><br>
> | Server 1 |===================| Server 2 | Server 4 |===================| Server 3 |<br>
><br>
> +----------+ | +----------+----------+ | +----------+<br>
><br>
> | |<br>
><br>
> +---------------------------+<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> Best Regards,<br>
><br>
> Yu<br>
><br>
><br>
><br>
><br>
><br>
> From: Kea-users <kea-users-bounces@lists.isc.org> on behalf of Suzanne Goldlust <sgoldlust@isc.org><br>
> Date: Wednesday, May 29, 2024 at 12:33</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif"> </span><span style="font-size:11.0pt">PM<br>
> To: kea-users@lists.isc.org <kea-users@lists.isc.org><br>
> Subject: [EXTERNAL] [Kea-users] Kea 2.6.0 is released!<br>
><br>
> ISC is excited to announce the release of Kea 2.6.0, the first version of the Kea 2.6 stable branch.<br>
><br>
> As a reminder: Internet Systems Consortium uses an alternating branch scheme for our releases. Branches that have an odd number in the digit after the first "." (for example: Kea 2.3, Kea 2.5) are development branches, while branches that are even-numbered
are intended for stable production use (for example: Kea 2.4, Kea 2.6).<br>
><br>
> With the release of stable branch Kea 2.6, the Kea 2.5 development branch has now reached the end of its life and is no longer supported. The new Kea 2.7 development branch will be released in summer 2024.<br>
><br>
><br>
><br>
> There are now two stable Kea branches: Kea 2.4 (the most recent release is Kea 2.4.1, from November 2023), and the new Kea 2.6.0, released today. The Kea 2.2 branch has now reached End of Life.<br>
><br>
> ----------<br>
><br>
><br>
> The 2.6.0 release contains the results of nearly a year's worth of development effort, previously previewed in the 2.5 development branch.<br>
><br>
> Highlights include:<br>
><br>
> - Hub-and-spoke High Availability<br>
> - New hook libraries<br>
> - Support for more client options<br>
> - Docker images<br>
> - New Cloudsmith packages<br>
><br>
><br>
><br>
> and much more! Please read the full release notes at <a href="https://gitlab.isc.org/isc-projects/kea/-/wikis/Release-Notes/release-notes-2.6.0">
https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.isc.org%2Fisc-projects%2Fkea%2F-%2Fwikis%2FRelease-Notes%2Frelease-notes-2.6.0&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838377190%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=NJigl5MsHh9oKedj7fcq%2BtlgOlKDZDZxriMbUJkRet0%3D&reserved=0</a>.<br>
><br>
> Kea 2.6.0 can be downloaded from: <a href="https://dl.cloudsmith.io/public/isc/kea-2-6/raw/versions/2.6.0/kea-2.6.0.tar.gz">
https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdl.cloudsmith.io%2Fpublic%2Fisc%2Fkea-2-6%2Fraw%2Fversions%2F2.6.0%2Fkea-2.6.0.tar.gz&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838384200%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=mNN8%2FXEXOnFmaelcgaAB4abp4NfIojWxjSNsrsNvrhE%3D&reserved=0</a>.<br>
><br>
> All current versions, along with the release notes and the Administrator Reference Manual (ARM), are also available via the ISC downloads page:
<a href="https://www.isc.org/download">https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.isc.org%2Fdownload&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838389463%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=MAfMbgHawRCByuYWUozroQMnbEtsp2l0nmiXcyOGP8M%3D&reserved=0</a>.<br>
><br>
> A blog post with some more details about the new release is available at: <a href="https://www.isc.org/blogs/kea-2-6-0/">
https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.isc.org%2Fblogs%2Fkea-2-6-0%2F&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838394831%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=6t6mC5hzUy7GULbRjjehyzQtIjXvcuaFmjPao98AN64%3D&reserved=0</a>.<br>
><br>
> We thank you for using ISC's software.<br>
><br>
> ISC<br>
><br>
> --<br>
> ISC funds the development of this software with paid support subscriptions. Contact us at
<a href="https://www.isc.org/contact/">https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.isc.org%2Fcontact%2F&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838399598%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=HIF09FBLgiu7IKssupPCHBhbfmUAzfLowpaqZSymzhk%3D&reserved=0</a>
for more information.<br>
><br>
> To unsubscribe visit <a href="https://lists.isc.org/mailman/listinfo/kea-users">
https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fmailman%2Flistinfo%2Fkea-users&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838403987%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=za5NNOBzYnyNyypix2BXpb11qPco07GkSpjem5OaEvA%3D&reserved=0</a>.<br>
><br>
> Kea-users mailing list<br>
> Kea-users@lists.isc.org<br>
> <a href="https://lists.isc.org/mailman/listinfo/kea-users">https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fmailman%2Flistinfo%2Fkea-users&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838408392%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=jQoLRRyPKYZrBznhG%2B6V4I4niU9Qs5ZLq19zRySeNFQ%3D&reserved=0</a><br>
-- <br>
ISC funds the development of this software with paid support subscriptions. Contact us at
<a href="https://www.isc.org/contact/">https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.isc.org%2Fcontact%2F&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838412507%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=3AjwP6SxIBk4p7Fk8jR%2BB0eB4TJYvMp4cWo0Py7kKB0%3D&reserved=0</a>
for more information.<br>
<br>
To unsubscribe visit <a href="https://lists.isc.org/mailman/listinfo/kea-users">https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fmailman%2Flistinfo%2Fkea-users&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838416581%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=xMVfH7D%2BsXB4U%2BvhSm5ZM%2BCz5rcSUwvgNrT5hGC0iMU%3D&reserved=0</a>.<br>
<br>
Kea-users mailing list<br>
Kea-users@lists.isc.org<br>
<a href="https://lists.isc.org/mailman/listinfo/kea-users">https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fmailman%2Flistinfo%2Fkea-users&data=05%7C02%7Cyu.xiao%40cox.com%7C6036dace5b1943230a9408dc80d23829%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638526888838421022%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=YUFh3e1hvUz%2FetoaApc4miiVxWpNb02o%2BHmAI1db4iM%3D&reserved=0</a><o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</body>
</html>