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Today's Topics:
1. Re: ISC DHCPv6-BIND9 DDNS update problem (Mirsad Todorovac)
2. IP swapping for network restart or reboot for ubuntu client
(Kraishak Mahtha)
3. Re: IP swapping for network restart or reboot for ubuntu
client (Kraishak Mahtha)
4. Re: IP swapping for network restart or reboot for ubuntu
client (Wayne Gemmell | Connect)
----------------------------------------------------------------------
Message: 1
Date: Tue, 14 Jun 2022 09:27:35 +0200
From: Mirsad Todorovac <mirsad.todoro...@alu.unizg.hr>
To: dhcp-users@lists.isc.org
Subject: Re: ISC DHCPv6-BIND9 DDNS update problem
Message-ID: <7730ca86-dbf0-4d51-ad21-610037ae1...@alu.unizg.hr>
Content-Type: text/plain; charset=UTF-8; format=flowed
On 6/10/22 19:14, Simon wrote:
>
>> Unfortunately, I am not even the admin of all those net segments and rogue
>> devices. I might be simply out of luck with this one.
> Presumably you know the network admins who are responsible for those segments
> ? And presumably there must be a person or group which oversees the network
> as a whole (subnets/prefixes etc) ? Just letting everyone ?do their own
> thing? without central planning is a recipe for disaster.
>
> So you need to go to them and point out what the problem is, and what needs
> to be done to fix it. Of course, if they don?t want to then you?re down to
> internal politics and potentially you end up reporting back to management
> that you can?t implement what?s asked for because others are actively
> sabotaging the network (that?s how I?d describe it if supposed network admins
> are doing nothing to deal with rogue services like this.)
Hi, Simon,
There is a quote that says that it is wrong to attributed to active sabotaging
what can be explained with neglect and stupidity.
I believe in the most cases these are simply the default settings for the
devices. Probably someone in those companies thinks that it is a good idea to
have a dozen of DHCPv6 servers who do not talk to each other and have no ideas
of other server's IPv6 range - all on the same subnet.
Regards,
Mirsad
--
Mirsad Goran Todorovac
CARNet sistem in?enjer
Grafi?ki fakultet | Akademija likovnih umjetnosti
Sveu?ili?te u Zagrebu
--
CARNet system engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb, Republic of Croatia
tel. +385 (0)1 3711 451
mob. +385 91 57 88 355
------------------------------
Message: 2
Date: Tue, 14 Jun 2022 14:39:07 +0530
From: Kraishak Mahtha <kraishak....@gmail.com>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: IP swapping for network restart or reboot for ubuntu client
Message-ID:
<caddat84tdvbnkc4v5esb7_bmvc2sca43oqhubhgre-huxt6...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi all,
We are experiencing weird behavior with ISC's DHCP version 4.4.2. When the
Wintel(windows) clients use the ISC DHCP servers that are operating in a
primary-failover mode, then reboot or a renewal does not see any address
shuffle. When the Ubuntu clients use the ISC DHCP servers, we are observing
a periodic IP Address shuffle upon a reboot. This shuffling is not observed
when we are using a Microsoft DHCP solution. We are interested to know if
this issue is a known issue in the ISC database. If there is a workaround
to resolve this issue, please let us know.
Thanks in Advance
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Message: 3
Date: Tue, 14 Jun 2022 14:56:38 +0530
From: Kraishak Mahtha <kraishak....@gmail.com>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: IP swapping for network restart or reboot for ubuntu
client
Message-ID:
<CADDat86WSceAJ97JtXijQZU+PJ6ZfX24Utvt1cH=3tdwsw8...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
* Observed in the Ubuntu version 20.04
On Tue, Jun 14, 2022 at 2:39 PM Kraishak Mahtha <kraishak....@gmail.com>
wrote:
> Hi all,
> We are experiencing weird behavior with ISC's DHCP version 4.4.2. When the
> Wintel(windows) clients use the ISC DHCP servers that are operating in a
> primary-failover mode, then reboot or a renewal does not see any address
> shuffle. When the Ubuntu clients use the ISC DHCP servers, we are observing
> a periodic IP Address shuffle upon a reboot. This shuffling is not observed
> when we are using a Microsoft DHCP solution. We are interested to know if
> this issue is a known issue in the ISC database. If there is a workaround
> to resolve this issue, please let us know.
>
> Thanks in Advance
>
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Message: 4
Date: Tue, 14 Jun 2022 11:36:02 +0200
From: "Wayne Gemmell | Connect" <wa...@connect-mobile.co.za>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: IP swapping for network restart or reboot for ubuntu
client
Message-ID:
<cafk6eitzaahttbk2zg9rqvpbbdfkxfn+j62vs0c8lgqgats...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I can relate. We eventually jumped through hoops to avoid applying netplan.
Here's my thread on this.
https://lists.isc.org/mailman/htdig/dhcp-users/2021-March/022390.html
Regards
Wayne
On Tue, 14 Jun 2022 at 11:27, Kraishak Mahtha <kraishak....@gmail.com>
wrote:
> * Observed in the Ubuntu version 20.04
>
> On Tue, Jun 14, 2022 at 2:39 PM Kraishak Mahtha <kraishak....@gmail.com>
> wrote:
>
>> Hi all,
>> We are experiencing weird behavior with ISC's DHCP version 4.4.2. When
>> the Wintel(windows) clients use the ISC DHCP servers that are operating in
>> a primary-failover mode, then reboot or a renewal does not see any address
>> shuffle. When the Ubuntu clients use the ISC DHCP servers, we are observing
>> a periodic IP Address shuffle upon a reboot. This shuffling is not observed
>> when we are using a Microsoft DHCP solution. We are interested to know if
>> this issue is a known issue in the ISC database. If there is a workaround
>> to resolve this issue, please let us know.
>>
>> Thanks in Advance
>>
> --
> 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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