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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Hi Joe,</span></div>
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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">I realize you're having a specific issue, but for others and also to help troubleshoot,
here's how I configure dhcrelay on Almalinux 8:</span></div>
<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">---------------------------------------------------------------</span></div>
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<ol>
<li style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Install dhcp-relay</span></li><li style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted0 ContentPasted1">Copy /lib/systemd/system/dhcrelay.service to /etc/systemd/system/dhcrelay6.service</span></li><li style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted0 ContentPasted1">Edit the service with
<code>systemctl edit dhcrelay6.service</code>:</span></li><ol style="list-style-type: lower-alpha;">
<li style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; color: rgb(0, 0, 0); display: block; background-color: rgb(255, 255, 255);">
<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted0 ContentPasted1 ContentPasted2 ContentPasted3">[Service]<br class="ContentPasted2">
ExecStart=</span>
<div style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted0 ContentPasted1 ContentPasted2 ContentPasted3">ExecStart=/sbin/dhcrelay -d --no-pid -6 -l $YOUR_IFACE_FACING_CLIENTS
-u $YOUR_IFACE_FACING_KEA</span></div>
</li></ol>
</ol>
<ol start="4">
<li style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted0 ContentPasted1 ContentPasted2 ContentPasted3">Reload the systemd daemon and (re)start the dhcrelay
service.</span></li></ol>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
For the Kea side, can you show your config, and logs? Inside my shared networks list, I have the following, emphasis on the "relay" object:</div>
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<span style="font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);" class="ContentPasted4">---------------------------------------------------------------</span><br>
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{
<div class="ContentPasted5"> "name": "Dummy DHCPv6",</div>
<div class="ContentPasted5"> "valid-lifetime": 600,</div>
<div class="ContentPasted5"> "relay": {</div>
<div class="ContentPasted5"> "ip-addresses": [ "ff05::1:3" ]</div>
<div class="ContentPasted5"> },</div>
<div class="ContentPasted5"> "option-data": [</div>
<div class="ContentPasted5"> { "name": "domain-search", "data": "your-domain.internal" }</div>
<div class="ContentPasted5"> ],</div>
<div class="ContentPasted5"> "subnet6": [</div>
<div class="ContentPasted5"> {</div>
<div class="ContentPasted5"> "subnet": "2001:db8::/40",</div>
<div class="ContentPasted5"> "pools": [</div>
<div class="ContentPasted5"> { "pool": "2001:db8::f - 2001:db8::fffe" }</div>
<div class="ContentPasted5"> ],</div>
<div class="ContentPasted5"> "pd-pools": [</div>
<div class="ContentPasted5"> {</div>
<div class="ContentPasted5"> "prefix": "2001:db8:100::",</div>
<div class="ContentPasted5"> "prefix-len": 40,</div>
<div class="ContentPasted5"> "delegated-len": 56</div>
<div class="ContentPasted5"> }</div>
<div class="ContentPasted5"> ]</div>
<div class="ContentPasted5"> }</div>
<div class="ContentPasted5"> ]</div>
}<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Kea-users <kea-users-bounces@lists.isc.org> on behalf of Joe Botha <joe@swimgeek.com><br>
<b>Sent:</b> Monday, December 12, 2022 8:54 AM<br>
<b>To:</b> kea-users@lists.isc.org <kea-users@lists.isc.org><br>
<b>Subject:</b> [Kea-users] DHCPv6 relay and ff05::1:3</font>
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<div class="PlainText">CAUTION: This email originated outside the organization. Do not click any links or attachments unless you have verified the sender.<br>
<br>
Hi<br>
<br>
Busy setting up a dhcpv6 server and relay, using Kea 2.2 and ISC dhcrelay 4.4.1.<br>
<br>
Kea DHCPv6 server listens on:<br>
udp6 ff02::1:2 port 547<br>
<br>
but ISC dhcrelay sends to:<br>
ff05::1:3 port 547<br>
<br>
I can’t seem to tell kea to listen on ff05::1:3, and I can’t seem to tell dhcrelay to send to ff02::1:2.<br>
<br>
Am I missing something?<br>
<br>
--<br>
Swimmingly,<br>
Joe<br>
<br>
swimgeek.com/blog +27 82 562 6167 instagram.com/joe.swimgeek<br>
"...all progress depends on the unreasonable man.”<br>
<br>
<br>
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