<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="">Hi,<div class=""><br class=""></div><div class="">Here’s what we’ve done.</div><div class=""><br class=""></div><div class="">We created a network:</div><div class=""><br class=""></div><div class=""><dt title="Name" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Name</dt><dd class="word-wrap" style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; width: 1262px; word-wrap: break-word; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;">ipv6-testing-network</dd><dt title="ID" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">ID</dt><dd data-display="ipv6-testing-network" style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">9d5ca309-1861-4422-bcff-8818f9762a6f</dd><dt title="Project ID" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Project ID</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">653f5a2e60d34768a8629e5d4fca0738</dd><dt title="Status" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Status</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Active</dd><dt title="Admin State" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Admin State</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">UP</dd><dt title="Shared" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Shared</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Yes</dd><dt title="External Network" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">External Network</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Yes</dd><dt title="MTU" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">MTU</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">1500</dd><dt title="Provider Network" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Provider Network</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Network Type: vlan</dd><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Physical Network: vlan</dd><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Segmentation ID: 51</dd><div class=""><br class=""></div></div><div class="">We created a subnet:</div><div class=""><br class=""></div><div class=""><dt title="Name" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Name</dt><dd class="word-wrap" style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; width: 1262px; word-wrap: break-word; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;">ipv6-testing-v6</dd><dt title="ID" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">ID</dt><dd data-display="ipv6-testing-v6" style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">763771d4-b9d7-419a-ba04-97ce3abaf152</dd><dt style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Project ID</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">653f5a2e60d34768a8629e5d4fca0738</dd><dt title="Network Name" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Network Name</dt><dd class="word-wrap" style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; width: 1262px; word-wrap: break-word; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;">ipv6-testing-network</dd><dt title="Network ID" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Network ID</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class=""><a href="https://openstack.viarezo.fr/project/networks/9d5ca309-1861-4422-bcff-8818f9762a6f/detail" style="box-sizing: border-box; color: rgb(66, 139, 202); text-decoration: none;" class="">9d5ca309-1861-4422-bcff-8818f9762a6f</a></dd><dt title="Subnet Pool" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Subnet Pool</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">None</dd><dt title="IP Version" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">IP Version</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">IPv6</dd><dt title="CIDR" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">CIDR</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">xxxx:xxxx:2f1:aaaa::/64</dd><dt title="IP Allocation Pools" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">IP Allocation Pools</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Start xxxx:xxxx:2f1:aaaa::2 - End xxxx:xxxx:2f1:aaaa:ffff:ffff:ffff:ffff<br style="box-sizing: border-box;" class=""></dd><dt title="Gateway IP" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Gateway IP</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">xxxx:xxxx:2f1:aaaa::1</dd><dt title="DHCP Enabled" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">DHCP Enabled</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Yes</dd><dt title="IPv6 Address Configuration Mode" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">IPv6 Address Configuration Mode</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">SLAAC: Address discovered from OpenStack Router</dd><dt title="Additional Routes" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">Additional Routes</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">None</dd><dt title="DNS Name Servers" style="box-sizing: border-box; line-height: 1.42857; font-weight: 700; float: left; width: 160px; clear: left; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">DNS Name Servers</dt><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class="">None</dd><dd style="box-sizing: border-box; line-height: 1.42857; margin-left: 180px; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 13px;" class=""><br class=""></dd></div><div class=""><div><br class=""></div><div>We created Ubuntu and Debian instances. According to Horizon, the instance IPv6 is <font color="#000000" class="">xxxx:xxxx:2f1:aaaa:f816:3eff:fe6d:c41a. Yet, we only have a <span style="caret-color: rgb(0, 0, 0);" class="">link local</span> address <span style="caret-color: rgb(0, 0, 0);" class="">which is </span></font><span style="color: rgb(0, 0, 0);" class="">fe80::f816:3eff:fe6d:c41a/64. TCPdump indicates no Router Advertisement. We tried with and without adding a router on the Network in Horizon. ICMPv6 is authorized in INGRESS from ::/0.</span></div><div><span style="color: rgb(0, 0, 0);" class=""><br class=""></span></div><div><font color="#000000" class="">We checked on the controllers, the computes and in <span style="caret-color: rgb(0, 0, 0);" class="">the Neutron containers, systemctl indicated no instance of RADVD. Maybe we checked incorrectly...</span></font></div><div><font color="#000000" class=""><span style="caret-color: rgb(0, 0, 0);" class=""><br class=""></span></font></div><div><font color="#000000" class="">Do you have any suggestions ? I add that we are working with OpenStack Ussuri deployed with OpenStack-ansible.</font></div><div><font color="#000000" class=""><br class=""></font></div><div><font color="#000000" class="">Thanks,</font></div><div><font color="#000000" class="">Marc-Antoine</font></div><div><span style="color: rgb(0, 0, 0); font-family: Menlo;" class=""><br class=""></span></div><div><br class=""><blockquote type="cite" class=""><div class="">Le 8 mars 2022 à 08:59, Slawek Kaplonski <<a href="mailto:skaplons@redhat.com" class="">skaplons@redhat.com</a>> a écrit :</div><br class="Apple-interchange-newline"><div class=""><meta charset="UTF-8" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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="">Hi,</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">On poniedziałek, 7 marca 2022 10:36:30 CET Marc-Antoine Godde wrote:</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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=""><blockquote type="cite" style="font-family: Helvetica; font-size: 14px; 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; text-decoration: none;" class="">Hello,<br class=""><br class="">Thanks for your answer.<br class=""><br class="">If I’m correct, we can just use a virtual router with SLAAC since RADVD can deal with RS and emit RA (with support for RFC6106), right ?<span class="Apple-converted-space"> </span><br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">Yes, virtual router created in the Neutron is enough there. It will spawn radvd in the qrouter namespace and will send RA to the Vms.</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">Please note that Neutron don't supports privacy extension [1] so You will need to make sure that it's disabled it on Your vms.</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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=""><blockquote type="cite" style="font-family: Helvetica; font-size: 14px; 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; text-decoration: none;" class="">More generally, aren’t we suppose to have a virtual router every time, even in DHCPv6 (stateless and statefull), to answer RS ? I have to admit that I’m not very familiar at the moment with the implementations of RFCs in OpenStack.<br class=""><br class="">Currently, we prefer the idea of adding IPv6 through SLAAC to have a uniform network. If we do so, we’d like to avoid sending RA from our physical router to limit its load. Yet, we do not any other arguments to support this choice.<br class="">Do you have any recommendations on what to do in latest versions of OpenStack ? What is usually done ?<br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">TBH I don't have such experience. That's more question to operators of OpenStack.</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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=""><blockquote type="cite" style="font-family: Helvetica; font-size: 14px; 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; text-decoration: none;" class=""><br class="">Thanks,<br class="">Marc-Antoine<br class=""><br class=""><blockquote type="cite" class="">Le 7 mars 2022 à 09:12, Slawek Kaplonski <<a href="mailto:skaplons@redhat.com" class="">skaplons@redhat.com</a>> a écrit :<br class=""><br class="">Hi,<br class=""><br class="">On poniedziałek, 7 marca 2022 02:36:24 CET Marc-Antoine Godde wrote:<br class=""><blockquote type="cite" class="">Hello.<br class=""><br class="">We are progressively adding support for IPv6 in my company. We decided to use SLAAC only for laptops, phones, … since DHCPv6 isn’t supported on Android. RDNSS support will also increase. We are now planning our deployment on OpenStack. We already know that we'll rely only on neutron but we are not yet fixed between DHCPv6 and SLAAC ? Do you have any arguments for one these for VMs ?<br class=""><br class="">Thanks,<br class="">Marc-Antoine.<br class=""><br class=""></blockquote><br class="">With SLAAC You need to have Your network connected to the router in Neutron and You can only configure IP address on the VM. With DHCPv6 You can configure other things, like some static-routes, etc.<span class="Apple-converted-space"> </span><br class="">Neutron supports DHCPv6 in the stateful and stateless variants. With stateless, You are using RA for address configuration and DHCP server for other configation. Please see [1] for more details.<br class=""><br class="">[1] <a href="https://docs.openstack.org/neutron/latest/admin/config-ipv6.html#address-modes-for-ports" class="">https://docs.openstack.org/neutron/latest/admin/config-ipv6.html#address-modes-for-ports</a><br class=""><br class=""></blockquote><br class=""><br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">[1]<span class="Apple-converted-space"> </span></span><a href="https://datatracker.ietf.org/doc/html/rfc4941" style="font-family: Helvetica; font-size: 14px; 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="">https://datatracker.ietf.org/doc/html/rfc4941</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">--<span class="Apple-converted-space"> </span></span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">Slawek Kaplonski</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">Principal Software Engineer</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; 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: Helvetica; font-size: 14px; 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="">Red Hat</span></div></blockquote></div><br class=""></div></body></html>