[Kea-users] kea DHCPv6 and clients not working

Włodzimierz Wencel wlodek at isc.org
Mon Nov 14 14:21:46 UTC 2016


I'm glad you figured out what was going on here. We actually have ticket
for this issue and it will be sorted out in Kea 1.2.

Thanks a lot for your effort,

Wlodek Wencel


On 11/10/2016 08:57 PM, SoupNazi izaNpuoS wrote:
> I was able to fix this problem by changing this (under "Dhcp6": { ):
>
> "preferred-lifetime": 600,
>
> "valid-lifetime": 600,
>
> "renew-timer": 500,
>
> "rebind-timer": 400,
>
>
> To this:
>
> "valid-lifetime": 400,
>
> "renew-timer": 100,
>
> "rebind-timer": 200,
>
> "preferred-lifetime": 300,
>
>
> I'm sure the order didn't matter.  However, I believe the problem was
> that renew-timer was higher than rebind-timer before.  If that is
> indeed the problem, might want to have the server check for that and
> refuse to run if it is encountered.
>
> All three clients are now able to get an address.
>
> I was able to recreate the clients not getting an address by simply
> setting:
>
> "renew-timer": 300,
>
> "rebind-timer": 200,
>
>
> This is valid:
>
> "renew-timer": 200,
>
> "rebind-timer": 200,
>
>
> This is also valid:
>
>
> "valid-lifetime": 400,
>
> "renew-timer": 500,
>
> "rebind-timer": 600,
>
> "preferred-lifetime": 300,
>
>
> It appears that it works as long as the renew timer is lower or the
> same as the rebind timer.
>
>
> Further testing shows that "preferred-lifetime" cannot be larger than
> "valid-lifetime" as:
>
>
> "valid-lifetime": 600,
>
> "preferred-lifetime": 900,
>
>
> does not work but:
>
>
> "valid-lifetime": 600,
>
> "preferred-lifetime": 600,
>
>
> does.
>
>
> Server does not complain about any of these scenarios.  Just food for
> thought that you might want it to complain.
>

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