Thanks a lot Simon, it does seem to be a WIDE issue - the DHCPv6 transaction 
works perfectly fine with the ISC client. I wasn't using WIDE for any 
particular reason over ISC, just an old habit/name recognition from years past, 
so I'm happy to move to what works best!

Thanks,
Joshua M. Boniface

On 2018-11-20 04:00 PM, Simon Kelley wrote:
> This does seem odd. Would it be possible to capture the DHCP packets,
> using wireshark or tcpdump? Send the dump directly to me if you don't
> want to post it in public.
> 
> I'm not sure what the status of the WIDE client is - it's not common.
> Maybe worth trying the ISC client instead, for quick fix. I can't see an
> obvious problem with your config.
> 
> 
> 
> Cheers,
> 
> Simon.
> 
>>
>> sudo /usr/sbin/dnsmasq \
>>   --bogus-priv \
>>   --no-hosts \
>>   --dhcp-authoritative \
>>   --filterwin2k \
>>   --expand-hosts \
>>   --domain=test \
>>   --local=/test/ \
>>   --log-facility=- \
>>   --log-dhcp \
>>   --keep-in-foreground \
>>   --bind-interfaces \
>>   --interface=br1002 \
>>   --except-interface=lo \
>>   --listen-address=2001:ffff:1111::1 \
>>   --dhcp-range=::2,::ffff,constructor:br1002,24h
>>
>> That `listen-address` is definitely bound to the server side:
>>
>> 6: br1002: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8800 qdisc noqueue
>> state UP group default qlen 1000
>>     link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
>>     inet6 2001:ffff:1111::1/64 scope global
>>        valid_lft forever preferred_lft forever
>>
>> What's happening is my DHCPv6 requests come in fine, but the server
>> reports "no available addresses" even though I have what appears to be a
>> valid range of available addresses:
>>
>> dnsmasq-dhcp[746253]: 12629722 available DHCP range: 2001:ffff:1111::2
>> -- 2001:ffff:1111::ffff
>> dnsmasq-dhcp[746253]: 12629722 client MAC address: 52:54:00:5c:f1:32
>> dnsmasq-dhcp[746253]: 12629722 DHCPSOLICIT(br1002)
>> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31
>> dnsmasq-dhcp[746253]: 12629722 DHCPADVERTISE(br1002)
>> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 no addresses available
>> dnsmasq-dhcp[746253]: 12629722 tags: dhcpv6, br1002
>> dnsmasq-dhcp[746253]: 12629722 sent size: 14 option:  1 client-id 
>> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31
>> dnsmasq-dhcp[746253]: 12629722 sent size: 14 option:  2 server-id 
>> 00:01:00:01:23:83:8e:6b:52:54:00:14:c5:11
>> dnsmasq-dhcp[746253]: 12629722 sent size: 24 option: 13 status  2 no
>> addresses available
>> dnsmasq-dhcp[746253]: 626033 available DHCP range: 2001:ffff:1111::2 --
>> 2001:ffff:1111::ffff
>> dnsmasq-dhcp[746253]: 626033 client MAC address: 52:54:00:5c:f1:32
>> dnsmasq-dhcp[746253]: 626033 DHCPREQUEST(br1002)
>> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31
>> dnsmasq-dhcp[746253]: 626033 DHCPREPLY(br1002)
>> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31 no addresses available
>> dnsmasq-dhcp[746253]: 626033 tags: dhcpv6, br1002
>> dnsmasq-dhcp[746253]: 626033 sent size: 14 option:  1 client-id 
>> 00:01:00:01:23:7e:62:3a:52:54:00:5c:f1:31
>> dnsmasq-dhcp[746253]: 626033 sent size: 14 option:  2 server-id 
>> 00:01:00:01:23:83:8e:6b:52:54:00:14:c5:11
>> dnsmasq-dhcp[746253]: 626033 sent size: 24 option: 13 status  2 no
>> addresses available
>> dnsmasq-dhcp[746253]: 626033 sent size: 16 option: 23 dns-server 
>> 2001:ffff:1111::1
>>
>> From my understanding of the man page and the older thread "Using IPv6
>> DHCP"
>> (http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2012q3/006306.html),
>> this should be all I need to get a stateful DHCPv6 configuration. I've
>> also tried every combination of options I can come up with in the
>> `dhcp-range` config without success. Even if I set `static` mode and use
>> a `dhcp-host` option for my test host, I get the exact same "no
>> addresses available" message.
>>
>> SLAAC works fine when I add `enable-ra`, and `ra-stateless` to
>> `dhcp-range`, but this configuration to hand out only IPv6 addresses
>> statefully never seems to work as described in that thread. The goal is
>> to have a fully stateful DHCPv6 server that IPv6-only clients can get
>> addresses from and, most importantly, update dnsmasq with their hostname
>> (hence why I'm not using SLAAC or `ra-stateless`). The very specific
>> binding config is due to me running a separate dnsmasq instance for each
>> of an arbitrary number of interfaces.
>>
>> Can anyone offer any advice on what I might be doing wrong here?
>>
>> Thanks,
>> Joshua M. Boniface
>>
>> _______________________________________________
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>> Dnsmasq-discuss@lists.thekelleys.org.uk
>> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
>>
> 
> 
> 
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