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<div dir="auto">I need to figure this out also, as I run Kea in a container that can be destroyed and rebuilt anytime. I am thinking I will update the Kea config via a shell script run on boot/init.
<div dir="auto"><br>
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<div dir="auto">Would be nice if there was a "listen on all" option like 0.0.0.0 does for IPv4, but all the docs I have read indicate that it only binds to one address.</div>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Apr 23, 2024 09:26, Marek Hajduczenia <mxhajduczenia@gmail.com> wrote:<br type="attribution">
</div>
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<p class="MsoNormal"><span style="font-size:11.0pt">So I think I found the potential solution, though I am not sure I understand why this happens. I had to specifically configure the unicast IPv6 address in the “interfaces” clause, as follows</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> "interfaces-config": {</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> "interfaces": [</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> "enp6s18/2600:6ce4:0:42::130"</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> ]</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> },</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">far from ideal, but it seems to force the association with the unicast IPv6 address (marked in yellow highlight below)</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">root@server-kea-node1:/etc/kea# ss -tulpn</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">udp UNCONN 0 0 127.0.0.1:53001 0.0.0.0:* users:(("kea-dhcp-ddns",pid=629,fd=13))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">udp UNCONN 0 0 127.0.0.53%lo:53 0.0.0.0:* users:(("systemd-resolve",pid=610,fd=13))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">udp UNCONN 0 0 172.17.129.130:67 0.0.0.0:* users:(("kea-dhcp4",pid=630,fd=17))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"; background:yellow">udp UNCONN 0 0 [2600:6ce4:0:42::130]:547 [::]:* users:(("kea-dhcp6",pid=2059,fd=17))</span><span style="font-size:11.0pt; font-family:"Courier New"">
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">udp UNCONN 0 0 [fe80::be24:11ff:fea6:ccbe]%enp6s18:547 [::]:* users:(("kea-dhcp6",pid=2059,fd=18))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">udp UNCONN 0 0 [ff02::1:2]%enp6s18:547 [::]:* users:(("kea-dhcp6",pid=2059,fd=19))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 127.0.0.1:8000 0.0.0.0:* users:(("kea-ctrl-agent",pid=628,fd=7))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:(("sshd",pid=673,fd=3))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 127.0.0.53%lo:53 0.0.0.0:* users:(("systemd-resolve",pid=610,fd=14))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 *:9119 *:* users:(("stork-agent",pid=632,fd=8))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 128 [::]:22 [::]:* users:(("sshd",pid=673,fd=4))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 *:8080 *:* users:(("stork-agent",pid=632,fd=9))
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 *:9547 *:* users:(("stork-agent",pid=632,fd=3)</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">but this behavior does not seem to be documented anywhere. I did not find any indication that for v6 an explicit address allocation is also required, otherwise just the link local will be bound. Is this an
expected behavior?</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Regards</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Marek</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<div id="mail-editor-reference-message-container">
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<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">mxhajduczenia@gmail.com <mxhajduczenia@gmail.com><br>
<b>Date: </b>Tuesday, April 23, 2024 at 9:56</span><span style="font-size:12.0pt; font-family:"Arial",sans-serif; color:black"> </span><span style="font-size:12.0pt; color:black">AM<br>
<b>To: </b>'Kea user's list' <kea-users@lists.isc.org><br>
<b>Subject: </b>RE: DHCPv6, shared network, and double-relay Solicit messages</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">I guess netstat is deprecated. “ss” seems to show the binding but … only to a link local address for some reason on the v6 side.
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">root@server-kea-node1:~# ss -tulpn</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">udp UNCONN 0 0 127.0.0.1:53001 0.0.0.0:* users:(("kea-dhcp-ddns",pid=629,fd=13))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">udp UNCONN 0 0 127.0.0.53%lo:53 0.0.0.0:* users:(("systemd-resolve",pid=610,fd=13))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">udp UNCONN 0 0 172.17.129.130:67 0.0.0.0:* users:(("kea-dhcp4",pid=630,fd=17))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"; color:black; background:yellow">udp UNCONN 0 0 [fe80::be24:11ff:fea6:ccbe]%enp6s18:547 [::]:*
users:(("kea-dhcp6",pid=1631,fd=17)) </span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"; color:black; background:yellow">udp UNCONN 0 0 [ff02::1:2]%enp6s18:547 [::]:*
users:(("kea-dhcp6",pid=1631,fd=18))</span><span style="font-size:11.0pt; font-family:"Courier New"">
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 127.0.0.1:8000 0.0.0.0:* users:(("kea-ctrl-agent",pid=628,fd=7))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:(("sshd",pid=673,fd=3))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 127.0.0.53%lo:53 0.0.0.0:* users:(("systemd-resolve",pid=610,fd=14))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 *:9119 *:* users:(("stork-agent",pid=632,fd=8))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 128 [::]:22 [::]:* users:(("sshd",pid=673,fd=4))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 *:8080 *:* users:(("stork-agent",pid=632,fd=9))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp LISTEN 0 4096 *:9547 *:* users:(("stork-agent",pid=632,fd=3))
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The host does have unicast IPv6 address on it and the binding is done on specific interface.
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">root@server-kea-node1:~# ip a</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> inet 127.0.0.1/8 scope host lo</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> valid_lft forever preferred_lft forever</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> inet6 ::1/128 scope host
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> valid_lft forever preferred_lft forever</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">2: enp6s18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> link/ether bc:24:11:a6:cc:be brd ff:ff:ff:ff:ff:ff</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> inet 172.17.129.130/25 brd 172.17.129.255 scope global enp6s18</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> valid_lft forever preferred_lft forever</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">
<span style="color:black; background:yellow">inet6 2600:6ce4:0:42::130/64 scope global
</span></span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"; color:black; background:yellow"> valid_lft forever preferred_lft forever</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> inet6 fe80::be24:11ff:fea6:ccbe/64 scope link
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> valid_lft forever preferred_lft forever</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Regards</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Marek</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
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<div style="border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif"> mxhajduczenia@gmail.com <mxhajduczenia@gmail.com>
<br>
<b>Sent:</b> Tuesday, April 23, 2024 9:42 AM<br>
<b>To:</b> 'Kea user's list' <kea-users@lists.isc.org><br>
<b>Subject:</b> RE: DHCPv6, shared network, and double-relay Solicit messages</span><span style="font-size:11.0pt"></span></p>
</div>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I wonder whether it has anything to do with the fact that DHCPv6 process does not seem to listen on port 546</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">root@server-kea-node1:/home/kea # sudo netstat -tulpn | grep LISTEN</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp 0 0 127.0.0.1:8000 0.0.0.0:* LISTEN 628/kea-ctrl-agent
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 673/sshd: /usr/sbin
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 610/systemd-resolve
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp6 0 0 :::9119 :::* LISTEN 632/stork-agent
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp6 0 0 :::22 :::* LISTEN 673/sshd: /usr/sbin
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp6 0 0 :::8080 :::* LISTEN 632/stork-agent
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">tcp6 0 0 :::9547 :::* LISTEN 632/stork-agent</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> </span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">root@server-kea-node1:/home/kea# nmap localhost
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Starting Nmap 7.80 (
<a href="https://protect.checkpoint.com/v2/___https://nmap.org___.YzJ1OnppcGx5ZmliZXI6YzpvOjZkYzY1Y2Y5MDliYzlmMGM0MTg5Zjc2NGVlMjYzMzQ1OjY6ZGFmOTowNDc5ZWVmYzVmY2FiM2NmMTU2MDk4Y2MxOGQ4MTFmMjdkNzY4YzNjZjgwZmQ0MTExZDVlZDM0OGEwZDQ4ZmZlOmg6VA" title="Protected by Check Point: https://nmap.org">
https://nmap.org</a> ) at 2024-04-23 15:35 UTC</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Nmap scan report for localhost (127.0.0.1)</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Host is up (0.0000030s latency).</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Not shown: 997 closed ports</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">PORT STATE SERVICE</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">22/tcp open ssh</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">8000/tcp open http-alt</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">8080/tcp open http-proxy</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> </span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Nmap done: 1 IP address (1 host up) scanned in 0.08 seconds</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I do not see DHCPv4 or DHCPv6 ports open at all. Per manual, “<i>The DHCPv4 and DHCPv6 protocols assume the server will open privileged UDP port 67 (DHCPv4) or 547 (DHCPv6).”
</i>, which is fine, I do start the DHCPv6 process as root, so it should show up in the list of ports being open.
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Marek</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<div>
<div style="border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif">
<a href="mailto:mxhajduczenia@gmail.com">mxhajduczenia@gmail.com</a> <<a href="mailto:mxhajduczenia@gmail.com">mxhajduczenia@gmail.com</a>>
<br>
<b>Sent:</b> Tuesday, April 23, 2024 9:19 AM<br>
<b>To:</b> 'Kea user's list' <<a href="mailto:kea-users@lists.isc.org">kea-users@lists.isc.org</a>><br>
<b>Subject:</b> DHCPv6, shared network, and double-relay Solicit messages</span><span style="font-size:11.0pt"></span></p>
</div>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Dear colleagues, </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have been attempting to test a setup in the lab with DOCSIS CM operating in IPv6 mode only, where the DHCPv6 messages are relayed across the CMTS and the first-hop router (relay address 2600:6ce4:0:3e::1)
towards a Kea server running 2.4 code (address 2600:6ce4:0:42::130). </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">At the Kea server level, I ran a packet capture, to observe an interesting behavior – the Solicit messages from the DOCSIS CM are being forwarded back to the relay, embedded within the ICMPv6 message with
indication that the destination is unreachable for some reason. </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><img border="0" width="1515" height="108" id="Picture_x0020_1" src="cid:image001.png@01DA9563.FB2640A0" style="width:15.7812in; height:1.125in"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The Kea server is running without any issues so it seems that the binding is successful and
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">root@server-kea-node1:/home/ace# service isc-kea-dhcp6-server status
</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">● isc-kea-dhcp6-server.service - Kea DHCPv6 Service</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> Loaded: loaded (/lib/systemd/system/isc-kea-dhcp6-server.service; enabled; vendor preset: enabled)</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> Active: active (running) since Tue 2024-04-23 15:02:41 UTC; 11min ago</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> Docs: man:kea-dhcp6(8)</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> Main PID: 1551 (kea-dhcp6)</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> Tasks: 7 (limit: 4550)</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> Memory: 3.5M</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> CPU: 119ms</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> CGroup: /system.slice/isc-kea-dhcp6-server.service</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> └─1551 /usr/sbin/kea-dhcp6 -c /etc/kea/kea-dhcp6.conf</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New""> </span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:29 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:29.467 DEBUG [kea-dhcp6.commands/1551.140682475032192] COMMAND_SOCKET_CONNECTION_OPENED Opened socket 22 for incoming
command connection</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:29 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:29.468 DEBUG [kea-dhcp6.commands/1551.140682475032192] COMMAND_SOCKET_READ Received 129 bytes over command socket
22</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:29 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:29.468 INFO [kea-dhcp6.commands/1551.140682475032192] COMMAND_RECEIVED Received command 'statistic-get'</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:29 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:29.468 DEBUG [kea-dhcp6.commands/1551.140682475032192] COMMAND_SOCKET_WRITE Sent response of 92 bytes (0 bytes
left to send) over command socket 22</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:29 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:29.468 DEBUG [kea-dhcp6.commands/1551.140682475032192] COMMAND_SOCKET_CONNECTION_CLOSED Closed socket 22 for existing
command connection</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:30 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:30.158 DEBUG [kea-dhcp6.commands/1551.140682475032192] COMMAND_SOCKET_CONNECTION_OPENED Opened socket 22 for incoming
command connection</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:30 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:30.158 DEBUG [kea-dhcp6.commands/1551.140682475032192] COMMAND_SOCKET_READ Received 117 bytes over command socket
22</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:30 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:30.158 INFO [kea-dhcp6.commands/1551.140682475032192] COMMAND_RECEIVED Received command 'statistic-get-all'</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:30 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:30.158 DEBUG [kea-dhcp6.commands/1551.140682475032192] COMMAND_SOCKET_WRITE Sent response of 8715 bytes (0 bytes
left to send) over command socket 22</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Courier New"">Apr 23 15:14:30 server-kea-node1 kea-dhcp6[1551]: 2024-04-23 15:14:30.158 DEBUG [kea-dhcp6.commands/1551.140682475032192] COMMAND_SOCKET_CONNECTION_CLOSED Closed socket 22 for existing
command connection</span><span style="font-size:11.0pt"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I attach the Kea DHCPv6 config for reference (keav6.json) – the test device should match rpd-10 class, and make its way into 2600:6ce4:0:3e::/64 subnet.
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I am drawing blank on what the problem might be in here. I have not seen this behavior before and I am not sure whether it is related with the fact that I have two layers of relays in messages or not</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Regards</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Marek</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
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