Option 82 is missing from Secondry lease file incase of failover
Thomas Markwalder
tmark at isc.org
Wed Jul 11 17:59:06 UTC 2018
Hello:
I will double check this and get back to you.
Regards,
Thomas Markwalder
ISC Software Engineering
On 07/11/2018 01:52 PM, perl-list wrote:
> Folks,
>
> If any ISC employee is still monitoring this list, could we get an
> official confirmation that option 82 data (ie: option agent.circuit-id
> and option agent.remote-id) is NOT shared during the failover
> synchronization between failover peers and that this is by design (ie:
> not a bug)?
>
> ------------------------------------------------------------------------
>
> *From: *"Christian Kratzer" <ck-lists at cksoft.de>
> *To: *"Users of ISC DHCP" <dhcp-users at lists.isc.org>
> *Sent: *Monday, July 2, 2018 11:32:20 AM
> *Subject: *Re: Option 82 is missing from Secondry lease file
> incase of failover
>
> Hi,
>
> On Mon, 2 Jul 2018, perl-list wrote:
>
> > This is still a problem. It isn't that only the primary has the
> option 82 information. Its actually that the issuing server (the
> one that sent the offer) has the option 82 information in the
> dhcpd.leases file. The one that did not issue and received the
> lease via failover synchronization DOES NOT have the option 82
> stashed in the dhcpd.leases file. I have stash-agent-options true;
> in the config file.
> >
>
> yes I believe I cam to the same conclusion when evaluating isc
> dhcp failover for a certain use case a couple of years ago.
>
> Agent options are not replicated between failover peers.
>
> I added agent options to the omapi lease lookups back then.
>
> Something similar would have to be done to the lease replication
> for failover but I have not looked into it.
>
> Time would propably be better spent in transitioning to KEA which
> also has a superior failover mode that also works for ipv6.
>
> Greetings
> Christian
>
> --
> Christian Kratzer CK Software GmbH
> Email: ck at cksoft.de Wildberger Weg 24/2
> Phone: +49 7032 893 997 - 0 D-71126 Gaeufelden
> Fax: +49 7032 893 997 - 9 HRB 245288, Amtsgericht Stuttgart
> Mobile: +49 171 1947 843 Geschaeftsfuehrer: Christian
> Kratzer
> Web: http://www.cksoft.de/
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