Dhcpd randomly returns the IP address or the backup IP

[Wayne Gemmell | Connect]

Hi Sten

One of the host I've been testing with in the kannel pool alternates
between the following

    inet 10.3.2.36/16
    inet 10.3.2.60/16

Leases look as follows. I don't really understand why each would be both
free and active.

Here's the log file of the responsible peer: https://pastebin.com/UP6M1Lic

DHCP Lease list on responsible peer. The other one has similar data but no
host names. https://pastebin.com/WX3NwkM2

Here's snippet of the lease file https://pastebin.com/fKFiZpQ0

<https://connect-mobile.co.za/mobile_marketing_solutions/>


On Fri, 26 Mar 2021 at 19:32, Sten Carlsen <stenc at s-carlsen.dk> wrote:

>
> Thanks
>
> Sten
>
> On 26 Mar 2021, at 08.43, Wayne Gemmell | Connect <
> wayne at connect-mobile.co.za> wrote:
>
> Thanks Sten
>
> I've moved my class out of the subnet  and the issue still persists.
>
>
> Well, that is one can of worms out of the picture.
>
> What are the two addresses?
>
>
>
>
> <https://connect-mobile.co.za/mobile_marketing_solutions/>
>
>
> On Thu, 25 Mar 2021 at 17:51, Sten Carlsen <stenc at s-carlsen.dk> wrote:
>
>> You define the class kannel inside the subnet, so if there are any other
>> subnets, it will be defined there as well. Class definitions are global
>> always, defining them inside a subnet may have some "interesting" side
>> effects as some options are taken from that subnet even if the host gets an
>> address in a different subnet - routers is one of them.
>>
>> So one thought is, if the backup address is not in this subnet, the host
>> will be given incorrect information.
>>
>> --
>> Best regards
>> Sten Carlsen
>>
>> --------------------------------------------------
>> Aoccdrnig to rseerach at Cmabrigde Uinervtisy,
>> it deosn't mttaer in waht oredr the ltteers in a
>> wrod are, the olny iprmoatnt tihng is taht the
>> frist and lsat lteter be at the rghit pclae.
>> The rset can be a ttoal mses and you can slitl
>> raed it wotihut porbelm. Tihs is bcuseae the
>> hmuan mnid deos not raed ervey lteter by istlef,
>> but the wrod as a wlohe. Amzanig, huh?
>> --------------------------------------------------
>>
>> On 25 Mar 2021, at 13.01, Wayne Gemmell | Connect <
>> wayne at connect-mobile.co.za> wrote:
>>
>> I tried it. No change. The issue still persists.
>>
>>
>> <https://connect-mobile.co.za/mobile_marketing_solutions/>
>>
>>
>> On Tue, 23 Mar 2021 at 16:19, Wayne Gemmell | Connect <
>> wayne at connect-mobile.co.za> wrote:
>>
>>> I'll give it a try, thanks.
>>>
>>>
>>> <https://connect-mobile.co.za/mobile_marketing_solutions/>
>>>
>>>
>>> On Tue, 23 Mar 2021 at 01:32, Bill Shirley <
>>> bill at c3po.polymerindustries.biz> wrote:
>>>
>>>> Try:
>>>> update-optimization             off;
>>>>
>>>> Bill
>>>> On 3/19/2021 2:22 AM, Wayne Gemmell | Connect wrote:
>>>>
>>>> Hi
>>>>
>>>> When my dhcp server gets a DHCPRELEASE followed by a DHCPDISCOVER then
>>>> it randomly allocates the IP address or the backup IP address that are
>>>> assigned to the host in the lease file to the host. The assignments always
>>>> got to the correct host and the mac address doesn't change.
>>>>
>>>> When this backup IP address is allocated then dynamic DNS isn't updated
>>>> and my container is unreachable.
>>>>
>>>> I've put all the relevant details in the link below but am more than
>>>> happy enough to furnish anything that is missing. Can anyone help please?
>>>>
>>>> https://gitlab.isc.org/isc-projects/dhcp/-/issues/172
>>>>
>>>> <https://connect-mobile.co.za/mobile_marketing_solutions/>
>>>>
>>>> _______________________________________________
>>>> ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.
>>>>
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>>>>
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>>>>
>>> _______________________________________________
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>> information.
>>
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>>
>>
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>> ISC funds the development of this software with paid support
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>> information.
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>>
> _______________________________________________
> ISC funds the development of this software with paid support
> subscriptions. Contact us at https://www.isc.org/contact/ for more
> information.
>
> dhcp-users mailing list
> dhcp-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
>
>
> _______________________________________________
> ISC funds the development of this software with paid support
> subscriptions. Contact us at https://www.isc.org/contact/ for more
> information.
>
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> dhcp-users at lists.isc.org
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>
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