[Failover]

[Cedric OLLIVIER]

Hello,

I am focusing on deploying the two DHCP servers which share the same
address pool (failover) at different shedulings.
I suppose the primary should be launched first but the backup server could
be the first available in some cases.

Could you, please, confirm that the secondary cannot be launched first?
I have already tested this case and the leases offered by the secondary are
incorrect and rejected by clients.

Here is the output of the dhclient resulting from this test :

root at client:~# dhclient -v eth0
Internet Systems Consortium DHCP Client 4.1.1-P1
Copyright 2004-2010 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/b2:4a:6c:3d:26:d7
Sending on   LPF/eth0/b2:4a:6c:3d:26:d7
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
DHCPOFFER from 192.168.0.2
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPACK from 192.168.0.2
*no expiry time on offered lease.*
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
DHCPOFFER from 192.168.0.2
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPACK from 192.168.0.2
*no expiry time on offered lease.*


I don't find any solution to correct that and I was supprised
The version used is provided by Debian.

Thank you. Best regards,
Cédric OLLIVIER
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