failover compatibility

Glenn Satchell glenn.satchell at
Wed Sep 5 04:10:46 UTC 2012

No. The failover protocol changed somewhere in the 3.1 to 4.x range.
Details would be in the RELNOTES file distributed with the source.

Essentially you need to shutdown and upgrade both failover hosts at the
same time. You can pre-check the format of dhcpd.conf and dhcpd.leases
using dhcpd -t and dhcpd -T to see if there are any issues wit the new
version. In general, the files *should* be compatible with all newer


On Wed, September 5, 2012 8:24 am, Campbell.ColinD at wrote:
> Hi,
> Will a 3.0.5 server form a failover pair with a 4.x server? This would
> be a temporary arrangement during a server pair upgrade.
> Colin
> --
> Colin Campbell
> Security Specialist
> Public Safety Network Management Centre
> p: (07) 3008 4851
> f: (07) 3008 4799
> e: campbell.colind at
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