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<div class="moz-cite-prefix">Hi<br>
<br>
95% of the devices have fixed IPv4 and IPv6 addresses and are
working perfectly. DHCPv4 is also working perfectly for the small
number of devices that need it.<br>
DHCPv6 is working, clients are being assigned an IP address from
the correct pool but with a ::/128 address but are unable to
communicate with any other IPv6 device on the network.<br>
<br>
I have used wireshark to capture the RA from the pfsense firewall<br>
<br>
ICMPv6<br>
Managed address configuration: Set<br>
Other Configuration : Set<br>
Home Agent : Not Set<br>
Prf (Default Router Preference): Medium (0)<br>
Proxy : Not Set<br>
Reserved : 0<br>
ICMPv6 Option (Prefix information : NNNN::/64 )
subnet is correct<br>
ICMPv6 Option (Route Information : Medium ::/0) <br>
ICMPv6 Option (Recursive DNS Server NNNN:::AAAA) dns
server is correct<br>
ICMPv6 Option (DNS Search List Option euclid.plato )
dns search is correct<br>
ICMPv6 Option (MTU :1492)<br>
ICMPv6 Option (Source link-layer : pfsense LAN mac)<br>
<br>
What I am missing that is stopping the DHCPv6 (Linuxmint 20) from
correctly assigning the ::/64 netmask which is identified in the
ICMPv6 Prefix Information Option instead of the ::/128 netmask
which it is actually using?<br>
<br>
Thanks<br>
<br>
Russell<br>
<br>
<br>
On 01/03/2021 21:08, Gibbins, John (IM&T, Black Mountain)
wrote:<br>
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<p class="MsoNormal"><span>Hi Russell,</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>Is this a problem? Our systems
running with the old ISC DHCP server report /128 on Ubuntu
boxes for addresses handed out by DHCPv6 even though link
local addresses appear as /64.</span></p>
<p class="MsoNormal"><span>In a sense all host addresses are
/128 entries. The important thing is that the routing table
includes a route for the /64 block containing the address.
As long as that is there your system should work properly.
That should be learnt from the RA rather than DHCP.</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>Regards</span></p>
<p class="MsoNormal"><span>johng</span></p>
<p class="MsoNormal"><span> </span></p>
<div>
<div>
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span
lang="EN-US"> Kea-users
<a class="moz-txt-link-rfc2396E" href="mailto:kea-users-bounces@lists.isc.org"><kea-users-bounces@lists.isc.org></a>
<b>On Behalf Of </b>russell aspinwall<br>
<b>Sent:</b> Tuesday, 2 March 2021 7:32 AM<br>
<b>To:</b> Torbjörn Eklöv
<a class="moz-txt-link-rfc2396E" href="mailto:torbjorn.eklov@interlan.se"><torbjorn.eklov@interlan.se></a>;
<a class="moz-txt-link-abbreviated" href="mailto:kea-users@lists.isc.org">kea-users@lists.isc.org</a>; <a class="moz-txt-link-abbreviated" href="mailto:russell.aspinwall@bcs.org.uk">russell.aspinwall@bcs.org.uk</a><br>
<b>Subject:</b> Re: [Kea-users] Kea 1.6 DHCP6
configuration on Raspberry Pi 3b running Ubuntu 20.04</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">Hi<br>
<br>
Thanks for the feedback, my router is pfsense firewall and I
haveconfigured the LAN side Router Advertisements as
<br>
Managed -RA Flags [managed. other stateful], Prefix flags
[onlink, router] but the dhcp6 client get a ::/128 address<br>
I have also configured the correct RA subnet for the
interface but while the clients get an IPv6 address from the
pool, the subnet is still wrong.<br>
<br>
Thanks<br>
<br>
Russell<br>
<br>
<br>
<br>
On 01/03/2021 16:30, Torbjörn Eklöv wrote:</p>
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<div>
<p class="MsoNormal">DHCPv6 only gives you an address, RA is
the one who gives you the infrastructure.</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
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<p class="MsoNormal"> </p>
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<div>
<p class="MsoNormal"><br>
<br>
/Torbjörn Eklöv<br>
Interlan Gefle AB<br>
mobil: 070 - 683 51 75<br>
<a href="http://test-ipv6.se"
moz-do-not-send="true">http://test-ipv6.se</a></p>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">A home without IPv6 is just
a house</p>
</div>
</div>
</div>
</div>
</div>
</div>
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<div id="divRplyFwdMsg">
<p class="MsoNormal"><b>Från:</b> Kea-users <a
href="mailto:kea-users-bounces@lists.isc.org"
moz-do-not-send="true">
<kea-users-bounces@lists.isc.org></a> för russell
aspinwall <a
href="mailto:raspinwall@willows7.myzen.co.uk"
moz-do-not-send="true">
<raspinwall@willows7.myzen.co.uk></a><br>
<b>Skickat:</b> den 1 mars 2021 17:23<br>
<b>Till:</b> <a href="mailto:kea-users@lists.isc.org"
moz-do-not-send="true">kea-users@lists.isc.org</a>
<a href="mailto:kea-users@lists.isc.org"
moz-do-not-send="true"><kea-users@lists.isc.org></a><br>
<b>Ämne:</b> [Kea-users] Kea 1.6 DHCP6 configuration on
Raspberry Pi 3b running Ubuntu 20.04
</p>
<div>
<p class="MsoNormal"> </p>
</div>
</div>
<div>
<div>
<p class="MsoNormal">Hi,<br>
<br>
I have successfully configured HA between two Raspberry
Pi 3bs running <br>
Ubuntu server 20.04 with repository Kea 1.6 version.<br>
<br>
I have configured a DHCP6 range and a pool but the
client always has a <br>
::/128 address.<br>
<br>
As I have a mixture of staticly assigned and dhcp6
clients in the same <br>
::/64 subnet, I have specified my ::/64 subnet in the<br>
<br>
{<br>
"id": 2012,<br>
"pools": [ { "pool":
"NNNN:PPPP:QQQQ:T:ffff::/80" } ],<br>
"subnet": "NNNN:PPPP:QQQQ:T::/64",<br>
"interface": "eth0",<br>
"option-data" : [<br>
{<br>
"name": "domain-search",<br>
"csv-format": true,<br>
"data": "euclid.plato"<br>
},<br>
{<br>
"name": "dns-servers",<br>
"data":
"NNNN:PPPP:QQQQ:T:8213:1132:6645:2222"<br>
},<br>
{<br>
"name": "sntp-servers",<br>
"data":
"NNNN:PPPP:QQQQ:T:8213:1132:6645:2222"<br>
}<br>
<br>
]<br>
<br>
}<br>
<br>
How I can I assign a ::/64 address which is selected
from only a smaller <br>
portion of the ::/64 subnet so that the client is
assigned a ::/64 address.<br>
<br>
Thanks<br>
<br>
Russell<br>
<br>
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