Delays getting an address after a DHCPNAK

Doug Barton dougb at
Fri Jul 19 22:23:20 UTC 2013

On 07/19/2013 03:20 PM, Tom Harris wrote:
> I have what might be a somewhat uncommon situation (cloning from a VM
> that has a valid lease), which I've been unable to eliminate a 10 second
> delay on.
> The scenario is:
> - I'm cloning linux containers/VMs in a very transient way.  They come
> up and down frequently.
> - The new VM is cloned from a running VM which has a valid lease.
> - The new VM tries to renew the lease on the IP from the original VM,
> and gets NAK'd.
>   - {Delay 10 seconds}
> - The new VM does a DHCPDISCOVER and quickly gets a valid IP.
> I modified the reboot timeout, and the initial-interval, but they didn't
> effect the 10 second delay.   Is there another setting that would effect
> this?  Or any other way to eliminate the delay?

Have you monitored the client behavior in this state to see if it is the 
client which is waiting 10 seconds after the NAK?

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