The combination of a range and ra-names can't work. RA is router advertisement 
and the IP addresses are then given by slaac, so the range must only be a 
prefix and must have size exactly 64 bits. If you want real DHCP like in ipv4, 
you must use stateful DHCP, but that won't work with Android phones.

Am May 7, 2018 2:16:01 PM UTC schrieb "Merell L. Matlock, Jr." 
<mlmatlo...@gmail.com>:
>Interesting reads.  I even understood 1/4 of them :)
>
>My router does not (as far as I can tell, digging thru IPV6 settings)
>do
>GUA addressing.  I think I understand how to get dnsmasq issue ULA's,
>based upon a previous message from you (Sun Aug 20 14:33:35 BST 2017).
>
>Based upon this:
>
>dhcp-range=set:ula6,fd7a:d:e:f::1:0,fd7a:d:e:f::1:ffff,64,12h
>
>Would I then comment out the line from my config:
>
>dhcp-range=::100,::1ff,constructor:eth0,ra-names,slaac,168h
>
>I assume that would give me fc00::/7 addresses for my clients, with
>global addresses coming from the router?
>
>I get a /64 from my ISP:  (2600:8807:xxxx:27::/64)
>
>Thanks,
>
>Merell
>
>
>
>
>
>On 05/05/2018 09:37 PM, M. Buecher wrote:
>> Hi there,
>> 
>> IPv6 is by definition "multi-homed", so you would do Global Unicast
>> Addresses (GUA; Prefix 2000::/3; RFC 4291) via your router and Unique
>> Local Addresses (ULA; Prefix fc00::/7; RFC 4193) via dnsmasq.
>> 
>> If you want to manager GUA also via dnsmasq, then you need to do
>DHCP-PD
>> from dnsmasq to your router.
>> 
>> What kind of prefix do you get from your ISP? /48, /56, /60, /64?
>> 
>> Regards
>> Maddes
>> 
>>  
>> 
>> On 2018-05-06 01:48, Merell Matlock wrote:
>> 
>>> Hoping for some help/insight it my attempting to setup IPV6 DHCP; I
>must
>>> not seem to be able to input the right search terms, because I keep
>>> going around in circles.
>>>
>>> My Setup:
>>>
>>> ISP <> Modem <> Router <> home network
>>>
>>> DNS/DHCP on an RPi3 (DNSMASQ/Pi-hole, behind the router).
>>>
>>> V4 DHCP from the RPi works flawlessly.
>>>
>>> My router is pulling V6 from the ISP via DHCP-PD, and I can't
>fine-tune
>>> the routers' RA to only send out route info, and if I disable the RA
>>> from the router, no IPV6 at all (ifconfig/ipconfig only shows
>link-local
>>> addresses), no matter what I try with DNSMASQ.
>>>
>>> IPV6 pass-through on the router has the same result.
>>>
>>> Here is what I have from .conf files (all from pi-hole interface):
>>>
>>> enable-ra
>>> dhcp-option=option6:dns-server,[::]
>>> dhcp-range=::100,::1ff,constructor:eth0,ra-names,slaac,168h
>>> ra-param=*,high,60,0
>>>
>>> I changed the ra-param in an attempt to bypass the routers' RA.
>>>
>>> Option6 is working as expected.
>>>
>>> Any ideas, or am I just looking at a pipe dream (wanting host names
>in
>>> the pi-hole query log, instead of IPV6 addresses).
>>>
>>> Thank you,
>>>
>>>
>>> Merell Matlock
>>>
>>> _______________________________________________
>>> Dnsmasq-discuss mailing list
>>> Dnsmasq-discuss@lists.thekelleys.org.uk
>>> <mailto:Dnsmasq-discuss@lists.thekelleys.org.uk>
>>> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
>
>
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--
Uwe Schindler
Achterdiek 19, 28357 Bremen
https://www.thetaphi.de
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