Option 82 is missing from Secondry lease file incase of failover

Christian Kratzer ck-lists at cksoft.de
Mon Jul 2 15:32:20 UTC 2018


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.


Christian Kratzer                   CK Software GmbH
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