[Dnsmasq-discuss] DHCPv6 with dnsmasq for automated deployments

Oliver Freyermuth o.freyermuth at googlemail.com
Sun May 27 18:36:18 BST 2018


Am 25.05.2018 um 17:23 schrieb P W:
> On Fri, May 25, 2018 at 03:34:08PM +0200, Oliver Freyermuth wrote:
>> Am 25.05.2018 um 15:30 schrieb Kevin Darbyshire-Bryant:
>>>> On 25 May 2018, at 13:07, Oliver Freyermuth wrote:
>>>>
>>>> Dear dnsmasqers,
>>>>
>>>> I fear the following is a design issue of DHCPv6, but I wonder if there's a way to overcome it with dnsmasq...
>>> <snip>
>>>
>>> Hi Oliver,
>>>
>>> I???ve a similar/same problem when rebooting some QNAP NAS boxen,
>>> first boot/introduction to dnsmasq and they get both IPv4 & v6
>>> addresses set to fixed values based on MAC address.  On reboot whilst
>>> IPv4 is fine, IPv6 is not reallocated to the original address but
>>> rather a new one.  By curious co-incidence I just started looking
>>> into this problem today though it has been bugging me for months :-)
>>> Have tried various combinations of MAC address & DUID.
>>>
>>
>> Dear Kevin, 
>>
>> I think it's exactly the same issue. 
>> Comparing:
>>> Fri May 25 12:47:13 2018 daemon.info dnsmasq-dhcp[26168]: 5514926 DHCPREQUEST(br-lan) 00:01:00:01:22:9a:b4:43:24:5e:be:0c:bc:ba
>> with
>>> Fri May 25 12:59:40 2018 daemon.info dnsmasq-dhcp[26168]: 12603117 DHCPSOLICIT(br-lan) 00:01:00:01:22:9a:b7:2b:24:5e:be:0c:bc:ba
>> it seems the QNAP NAS box is using a fresh client DUID each reboot... 
> 
> 
> Patches Welcome

At the moment, there's sadly too much in my queue to start on another OpenSource project - but I'll look into it once this changes,
which sadly won't be in the very near future. 
If anybody else has time at hand, of course I can offer to test a patch (the setup is here). 

Cheers,
	Oliver

> 
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