[libvirt] [PATCH] network: Add support for configuring dhcp lease time

[Daniel P. Berrange]

On Wed, Sep 28, 2016 at 06:03:21PM +0200, Martin Wilck wrote:
> On Wed, 2016-09-28 at 16:41 +0100, Daniel P. Berrange wrote:
> 
> > Anyone who cares about VMs having the same IP address after resuming
> > from suspend *must* configure persistent DHCP mappings for their
> > guests.
> > Relying on automatic assignment will always fail in the end, may be
> > not immediately, may be not often, but it *will* fail at some point,
> > usually at the worst possible time.
> 
> I believe that setting "dhcp-authoritative" will be a major improvement
> for many setups. Without it, VMs are *never* able to reacquire their
> expired lease. With it, reacquiring the lease would work most of the
> time (as far as I'm concerned, practically always). I reckon the
> dnsmasq man page recommends it for a reason "when dnsmasq is definitely
> the only DHCP server on a network".

That certainly matches our deployment model for dnsmasq, so unless
there's a obvious downside to it, it seems reasonable to add that.


Regards,
Daniel
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