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<p>Hi Simon,</p>
<p>Thanks for getting back to me. Kermit is a Windows Home Server
box and is definitely not net or dual booted. Here's the relevant
'log dhcp' extract from a clean boot of it. <br>
</p>
dhcp-host=id:00:01:00:01:1b:75:4c:36:e0:3f:49:a1:d4:aa,[::4],Kermit<br>
dhcp-host=E0:3F:49:A1:D4:AA,192.168.219.4,kermit<br>
<br>
<p>Before booting:<br>
</p>
nslookup kermit<br>
nslookup: can't resolve '(null)': Name does not resolve<br>
<br>
Name: kermit<br>
Address 1: 2001:470:183f:da2b::4 kermit.darbyshire-bryant.me.uk<br>
Address 2: 192.168.219.4 kermit.darbyshire-bryant.me.uk<br>
<p>No entries in dhcp.leases.</p>
<p>Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 available DHCP range: 192.168.219.2 -- 192.168.219.253<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 vendor class: MSFT 5.0<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 client provides name: Kermit<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 DHCPREQUEST(br-lan) 192.168.219.4 e0:3f:49:a1:d4:aa<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 tags: lan, known, br-lan<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 DHCPACK(br-lan) 192.168.219.4 e0:3f:49:a1:d4:aa kermit<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 requested options: 1:netmask, 15:domain-name, 3:router,
6:dns-server,<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 requested options: 44:netbios-ns, 46:netbios-nodetype,
47:netbios-scope,<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 requested options: 31:router-discovery,
33:static-route, 121:classless-static-route,<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 requested options: 249, 43:vendor-encap<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 next server: 192.168.219.1<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 broadcast response<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 1 option: 53 message-type 5<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 54 server-identifier
192.168.219.1<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 51 lease-time 12h<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 58 T1 6h<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 59 T2 10h30m<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 1 netmask 255.255.255.0<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 28 broadcast 192.168.219.255<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 3 router 192.168.219.1<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 6 dns-server 192.168.219.1<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 23 option: 15 domain-name
darbyshire-bryant.me.uk<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 33 option: 81 FQDN
03:ff:ff:6b:65:72:6d:69:74:2e:64:61:72:62...<br>
Tue May 3 18:40:57 2016 daemon.info dnsmasq-dhcp[2862]:
1035611837 sent size: 4 option: 44 netbios-ns 192.168.219.1<br>
Tue May 3 18:40:58 2016 daemon.info dnsmasq-dhcp[2862]: 9972055
available DHCP range: 2001:470:183f:da2b::2 --
2001:470:183f:da2b::ffff:ffff<br>
Tue May 3 18:40:58 2016 daemon.info dnsmasq-dhcp[2862]: 9972055
vendor class: 311<br>
Tue May 3 18:40:58 2016 daemon.info dnsmasq-dhcp[2862]: 9972055
DHCPCONFIRM(br-lan) 00:01:00:01:1b:75:4c:36:e0:3f:49:a1:d4:aa<br>
Tue May 3 18:40:58 2016 daemon.info dnsmasq-dhcp[2862]: 9972055
DHCPREPLY(br-lan) 2001:470:183f:da2b::9f93:7b6a
00:01:00:01:1b:75:4c:36:e0:3f:49:a1:d4:aa Kermit<br>
Tue May 3 18:40:58 2016 daemon.info dnsmasq-dhcp[2862]: 9972055
tags: known, dhcpv6, br-lan<br>
Tue May 3 18:40:58 2016 daemon.info dnsmasq-dhcp[2862]: 9972055
sent size: 14 option: 1 client-id
00:01:00:01:1b:75:4c:36:e0:3f:49:a1:d4:aa<br>
Tue May 3 18:40:58 2016 daemon.info dnsmasq-dhcp[2862]: 9972055
sent size: 14 option: 2 server-id
00:01:00:01:1e:b7:72:d8:14:cc:20:be:89:33<br>
Tue May 3 18:40:58 2016 daemon.info dnsmasq-dhcp[2862]: 9972055
sent size: 29 option: 13 status 0 all addresses still on link<br>
</p>
<p>Only Entry in dhcp.leases related to kermit</p>
<p>1462340457 e0:3f:49:a1:d4:aa 192.168.219.4 kermit
01:e0:3f:49:a1:d4:aa<br>
</p>
<p>Kermit thinks it has 2001:470:183f:da2b::9f93:7b6a as per the
dhcp reply, which is fair enough but I don't understand why the
UID was ignored. Also, nslookup replies from dnsmasq still only
return the configured addresses for kermit and no sign of the
dhcpv6 allocated one. <br>
</p>
<p>Ideas?</p>
<p><br>
</p>
<p>Kevin<br>
</p>
<p> <br>
<br>
</p>
<p><br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 02/05/2016 17:24, Simon Kelley
wrote:<br>
</div>
<blockquote cite="mid:57277F4F.2090602@thekelleys.org.uk"
type="cite">
<pre wrap="">On 30/04/16 11:32, Kevin Darbyshire-Bryant wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Further clues maybe: So initially when kermit comes up it grabs an IPv4
address and I see this entry in dnsmasq's lease database:
1462055024 e0:3f:49:a1:d4:aa 192.168.219.4 Kermit 01:e0:3f:49:a1:d4:aa
Which looks pretty normal to me. Then a little while later, presumably
after a dhcpv6 request it gets changed to
1462055060 e0:3f:49:a1:d4:aa 192.168.219.4 Kermit
01:52:41:53:20:e0:3f:49:a1:d4:aa:00:00:09:00:00:00
There are also syslog messages of "abandoning lease to e0:3f:49:a1:d4:aa
of 192.168.219.4" which I don't get at all.
</pre>
</blockquote>
<pre wrap="">Are you dual-booting Kermit, or netbooting it, or doing anything else
which may cause it to run more than one DHCP client? From the
information given it looks like the host with MAC address
e0:3f:49:a1:d4:aa is presenting two different client-ids at different
times. Since client-id trumps MAC address as a unique host identifier,
that could explain what's going on. (the client-id is the last field in
the leases database).
Setting log-dhcp and posting the logs showing this sort of thing
happening would be useful.
Cheers,
Simon.
</pre>
<blockquote type="cite">
<pre wrap="">
On 29/04/16 12:27, Kevin Darbyshire-Bryant wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi All,
I've just noticed some strange/different behaviour with regard to
dhcpv6 address allocation. I've a couple of 'internal' machines that
I'd like to have fixed ip addresses. To that end, and it used to work
I've got lines similar to:
dhcp-host=E0:3F:49:A1:D4:AA,192.168.219.4,[::0:4],Kermit - In theory
kermit gets 192.168.219.4 and the ipv6 address 'constructed prefix::0:4'
Instead, these lines appear to be partially ignored with the host
getting the usual pseudo random address constructed from the ipv6
prefix/range. An nslookup pointing to dnsmasq does return the '0:4'
address, unfortunately that's not the address handed out by dhcp.
I'm also seeing ' abandoning lease to e0:3f:49:a1:d4:aa of
192.168.219.4' type warnings which is odd. Also the entry in the
leases database looks odd to me: 1461971298 e0:3f:49:a1:d4:aa
192.168.219.4 Kermit
01:52:41:53:20:e0:3f:49:a1:d4:aa:00:00:09:00:00:00 - that almost looks
like an ipv6 type entry.
Confused!
Kevin
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</pre>
</blockquote>
<pre wrap="">
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</pre>
</blockquote>
<pre wrap="">
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Thanks,
<a class="moz-txt-link-abbreviated" href="mailto:Kevin@Darbyshire-Bryant.me.uk">Kevin@Darbyshire-Bryant.me.uk</a>
M: +44 7947 355344 H: +44 1256 478597</pre>
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